Sorry, Peter, for not posting to your thread. I will add a link there.
I have to "split" my adapters in order to limit the number I need to buy. If I had to buy a new adapter in order to mount every different lens mount on every camera I own, then I would need a few hundred of them.
So I have pretty much standardized to Leica-M adapters whenever available, because M-Mount is widely used, while its register is shorter than most "classical" mounts and also because I can then use either a Techart Pro AF or a Yeenon helicoid adapter to mount the lenses on my Sony FE cameras.
Leica-M is also pretty easy to adapt to any other mirrorless camera, like M4/3.
Regarding adapted lenses, the possibilities are now nearly endless. For example, it is possible to benefit from the large image circle of medium format lenses to use a shift adapter to shoot panoramic views on a 24x36 sensor. Or to use a "SpeedBooster" to turn any fast lens into a super-duper Noctilux on a smaller format.
For really exotic mounts with no available adapter, or for lenses harvested from folding cameras, I can always use my "
ultimate weapon".
Cheers!
Abbazz