Yep, I've got a Stalker with two sets of limbs and they are different back and belly. Both Bocote on back, and one Osage on the belly, the other Zebrawood on the belly. Both look awesome!
Charlie

All the bows I have ordered are like that.  Its pretty common.  But I would say 75% are the same veneers.  My latest bows have Bocote on the bellies.  My Tip has Macasser on the face and my Wild Horse Creek has Waterfall Bubinga.