I started shooting IDPA with my CompTac MTAC and putting spare mags in my pocket. Once I embraced the competition of IDPA I upgraded to CompTac's OWB holster and a BladeTech double mag carrier.
I've got a Bladetech DOH and mag pouches and while they're generally well made and the folks at Bladetech are great... I've decided I don't care for it. Because of the cant and fact that it sits off my hip so much it seems to flop around more than I'd like. I haven't decided what I'm going to replace it with, yet.