MusicMaker PTB System prewired pickguard

[CalicoSkies]

I've gotten to like G&L's PTB system, along with the mini toggle switch they have on some models (which enables the bridge & neck pickups together or all 3 pickups together). I've been thinking about putting the same type of control system in one of my other guitars, and today I found a retailer online that sells a prewired pickguard from a company called MusicMaker that has the PTB tone system and a push pot to enable the bridge pickup:
http://www.advancedguitarcentre.co.uk/g ... guard.html
Is anyone familiar with these pickguards or the MusicMaker brand? Are they any good?