I used to DS3 pad with motion in joy and used my blue tooth, until I realised that motion in joy highjacks the bluetooth rendering it useless for anything other then motion in joy, I couldn't pair my phone up any longer so ditched it and just got a 360 wireless pad, much simplier...
Nice idea but proved too troublesome in the end, and I also found the bluetooth to be really picky and it would cut out for no reason at all..