Hi!
I have a Phatboy which I got for use with my Yamaha SW1000XG soundcard - and it's excellent for this purpose. However, concerning the JV1010 I am sure you would be much better off with a Kenton ControlFreak, since that unit can control so many more of the 1010's parameters. The PhatBoy manages only 12, which is rather meager.
All the best,
Magnus