Holy sh*t Pipeline, this here is something that I would never even know to have dreamed existed! As you touched on earlier, there is the question of whether the loop will transpose (ACID key information-wise) along with the switching function executed by using what should be non-pitched MIDI entries along the piano roll.
Worse comes to worse, I imagine you can set the sample to non-transpose within that plugin the same way you can in BiaB(?). This would be OK with most drum loops, and maybe less so with percussion loops that are noticeably "pitched." With other instruments it could be even more of issue I imagine where you want to switch loops AND change key.
I'm working and will not have time to read the documentation or download and futz around with it until later, so I'm not even sure if my questions are even relevant, but this is something I cannot wait to explore.
Thanks again, Pipeline for your amazing contributions!
Update: I actually just saw in the comments section in the video accompanying the VST's update, that this is something that was requested and they are looking into...so hopefully this will be a feature in a forthcoming update!