The PU-2 is now able to emulate pretty much everything a stock FCB1010 can do. I was actually able to send and receive sysex data to/from iFCB, a programming software available on the Mac.
One thing that the PU-2 doesn’t do is let the user program it using it’s own foot switches. It was decided early on the the PU-2 would be programmed from the computer/portable device.
So, the next step is developing my own programming interface for the PU-2; it’s about to do a lot more than the FCB1010!