I got one in the Tindie store (I see they are all sold out now) and ported my Arduino code over using Energia. The MIDI library for Arduino, version 3.2, http://arduinomidilib.sourceforge.net/ works with no changes!
I have a Rockband controller keyboard with a MIDI out, but it only transmits on channel 1. So I wrote the code to have the MSP430+MIDI breakout translate to whatever channel I want, by pressing S2 for channel UP and S1 for channel DOWN. The pots seem to be pretty noisy but I use one of them as a volume knob anyway.