Renoise is a very nice toy, i hope access guys are working with renoise developpers for make it fully compatible.
I didn't fully test my Polar with Renoise with the new 188.8.131.52 update, but I read in the Manual about a fixed static buffer thing.
apart from that it worked great for me. I use the hardware outputs on the Polar instead of the USB for this.
We are now rehearsing for new live material, when I take it back to the studio I will discuss functionallity further.
(for now we just hooked up the polar with the good old MIDI cables).
I would also like too see it working in Reason. I dont have a pc but when i buy one i would happily go renoise as i love trackers.