> Obviously I meant replacing the computer part with an iPad, not the controller.

> Good luck running a dozen instances of Diva if you don't care about the CPU

Good luck running...most plugins, u-he or otherwise, on an iPad.

That said, the question of which plugins will/won't work running directly on the Push is an interesting question. It runs Linux, no? u-he is one of the few "big" plugin devs that supports Linux, but if I had to guess, the standalone Push 3 will run first-party Ableton plugins only.