I first heard Steve Digiorgio play in Sadus. He was (still is) one of those bass dweebs who won't let the guitar/ drum bury the low end in a band context. He holds his own in terms of bass technicalities as well, in fact, one of the very few metal bassists out there to strap on a fretless unit.
I was trawling Ibanez's web pages & was surprised to see him there now playing the BTB bass. No idea if this is an exclusive deal but he switched camps for sure.