I've used a PIC32MX795F512L with UBW32 bootloader and firmware to test the board.
Interesting design. Does it break out any more pins than the UBW32?
http://dangerousprototypes.com/docs/Ger ... evelopment (http://dangerousprototypes.com/docs/Gertrude:_Microchip_TQFP-100_breakout_board_development)