I've been just kinda "getting by" with a Wilderness Instructor belt, a CompTac holster with stingray attachment, and one of their paddle lock dual mag carriers for a while for pistol matches.
I'd like to upgrade to one of the velcro dual layer belts that are available, and maybe even to more competition oriented mag carriers. I'm still very happy with the CompTac holster so I don't see myself altering that, and I'm not a fan of the race "holsters" that barely hold the gun anyways. Ideally, I'd like whatever I go with to be modular enough to work with 3-gun, and be able to accommodate shotgun shell carriers and AR mag carriers if desired.
Leaning towards this, from Black Scorpion:
https://www.amazon.com/USPSA-Competition-Shooting-Black-Suggested/dp/B009TRB5HC/Good? Bad? Indifferent? Thoughts on their pistol and AR mag carriers, or shotshell carriers? If no-go on theirs, then whose?