New to carrying, need help finding a holster my department will allow!

Hello friends! I’m insanely new to carrying, lost as to where to look, wear of holsters and brands of holsters. On top of being new to this, my department strictly requires that any holster worn off duty has three separate features.Must have a physical, active retention or ALS. IE: thumbreaks or ALS or similar locking featureMust be able to be affixed to a belt, so no pocket carry or holster less carryMust fully cover the trigger guardNow the last two are pretty generic and most if not every holster falls under those two rules but what gets me is the first requirement. I do not like the idea of a thumb break holster nor is there as wide a variety of them out there as simple passive retention holsters that rely on friction.Here’s some of the holsters I’ve been looking athttps://www.lawmens.com/bianchi-model-130-classified-holster/?gclid=EAIaIQobChMImeL81IXZ2gIVk1mGCh2EBQQiEAQYBCABEgJCNPD_BwEhttps://www.galls.com/desantis-dual-carry-ii-leather-thumb-break-holster?PMShttps://www.galls.com/RCE=GAPLA&gclid=EAIaIQobChMImeL81IXZ2gIVk1mGCh2EBQQiEAQYDCABEgKTJfD_BwELong story short i need some help finding some good, comfortable yet durable holsters that are thumbreaks or holsters that have an active retention and the same requirements listed above. I’m open to any and all suggestions, opinions and general information anyone would like to share about what I’ve listed above, carrying, concealing and more. Thank you!Things to note:I’m looking for AIWB or IWBMy service weapon is a Glock 17 Gen 2I’m okay with thumbreaks but not privy because I’m worried about draw speed and scratching the frame with the buttons via /r/CCW https://ift.tt/2KfPhhg