Are you sure? Everywhere I've read seems to indicate that the newer 26mp model does not have global shutter.
I was curious about the shutter, and I'm on the company's email notification list, so when the notification for the new model came out I sent a reply asking about whether the shutter was global or sequential, expressing concern about flicker-prone light sources such as LED stage lights.
I got back the following prompt response from David Barth, founder of PIXII (by the way, don't expect this from the head of Canon or Sony... or even Leica, unless you're the Sultan of Brunei):
"Regarding shutter, the new sensor has a regular electronic shutter, read:
non-global. We use a fast readout and an SDRAM to drive the sensor at
30FPS+. This is similar to what Fuji does, or similar to the design adopted
by the Sigma FP ie, sans mechanical shutter.
There can indeed be issues with artificial light sources. This can be
solved by choosing an appropriate exposure for the type of source in
presence (typically multiple of 1/100 or 1/120)."
I happen to have a Fujifilm X-T 4, which he cites as similar, and I also have access to a theater with LED stage lights... so I sneaked in early one day, turned some lights on, set my X-T 4 to use electronic shutter only, and shot test photos of the gray stage floor at a variety of shutter speeds and light levels. I got no banding; the results looked exactly the same as some comparison photos I shot at the same time using the mechanical shutter.
Note that these were the newer "flicker-free" type of LED, which use a blend of phosphors to fill in the gaps in the light spectrum. Phosphors don't stop glowing immediately between LED cycles, so flicker-free LEDs don't generally produce banding regardless of shutter type or speed; they're essentially continuous light sources. The older "pulsed" LEDs, which you'll still find on some stages and in setups such as DJ lighting rigs, use separate red, green and blue LEDs and pulse them at high speeds to create the appearance of white light or light of various colors. I have a small older video light that uses pulsed LEDs, and a similar but newer one that uses flicker-free LEDs, so I tried both of them against the X-T 4. The flicker-free LED was band-free with either electronic or mechanical shutter. The pulsed LED produced banding with BOTH the electronic and the mechanical shutter; the results looked different, but I'd consider both unusable. In other words, you can't condemn the electronic shutter for producing bad results with pulsed LEDs, because a mechanical focal-plane shutter does no better! (I'm guessing the only solution would be a leaf shutter, but I didn't have a leaf-shutter camera to use for testing.)
Monsieur Barth's suggestion to use a multiple of the power-line frequency unfortunately didn't help with the pulsed LEDs, because their pulse rate does not depend on power-line frequency; they're varied by pulse-width modulation (PWM) which uses a microcontroller that runs at an independent clock speed, usually much higher than the 50hz or 60hz used for line/mains power. This technique might help with old-style fluorescent lights, although when I experimented with an ancient fluorescent fixture in my kitchen, it produced severe banding with either electronic or mechanical shutter and regardless of shutter speed unless you were prepared to go as slow as 1/30 or so.
In short (and sorry for the excursion into LED peculiarities) based on my experiments with the X-T 4's shutter, I would guess that the fact that the new PIXII uses an electronic/sequential shutter rather than a global shutter or mechanical shutter doesn't seem likely to cause much of a problem with common light sources, except in cases when a mechanical shutter also would have a problem! Whether it will cause distortion with fast-moving objects is something I haven't been able to test (a mechanical shutter will do this too if the object is moving fast enough, of course.)
For the types of photography which you're likely to tackle with a rangefinder camera, I'm guessing the electronic/sequential shutter won't cause too many limitations... unless of course you want to use flash, since the PIXII lacks flash sync in any form, at least at this release.
In other words, to me the PIXII still sounds like a very promising camera... although at the moment it seems that the only way to find out for sure is to buy one. Dang, where's that winning lottery ticket?