I guess I should have said, the original design intent involving 2 or 3 lugs had nothing to do with metering, it was purely about carrying the camera and holding it [without straps in the way for the 2-lug].
Good for you! You found a way to use the camera better for you 🙂
Personally, I've had both, and the 2-lug version just works for me better. I wear an M5 with the strap across my chest, camera to the side under the right arm. It's out of the way till needed, comfortable, safe, feels less weight, easy to bring up, and no straps in the hand or extra unused lug digging into my palm. The strap isn't in the way, it's hanging down from the left side, I can also grip the camera with it, or pull down with tension on the body for a more steady shutter release.
But I do understand your point. One thing nice about the 3 lug version is having both vertical and horizontal options.