I wasn't familiar with Concealment Express
https://www.concealmentexpress.com
My quick check shows they don't offer an AIWB holster (I could have missed it). Wing and claw attachments are designed for AIWB holsters. I don't know what their function would be for a non-AIWB holster.
CE holsters can be adapted to AIWB with installation of a claw and a wedge. There’s really no functional difference between a dedicated AIWB and a typical CE holster except you have to add those accoutrements separately, and adjust the adjustable belt clip from canted (as shipped) to straight. The ride height tends to be very good for a proper grip and presentation, if you have a proper gun belt, and retention is excellent.
They make for a reasonably good quality, and honestly, good value solution for the gap between when you order a custom holster and when you actually get it. They offer holsters for a wide variety of firearms and they ship quickly- two days on average with Amazon Prime.
However, you may need to be prepared to make specific adjustments to their holsters for anything other than a plain vanilla version of your firearm.
For example, a few weeks ago I created a cutaway on my CE holster for the RMR on my carry VP9, while waiting for my custom Black Arch (which has already shipped and should be here tomorrow).
I also adapted one of their off the shelf SIG P229 holsters for my SIG P229 SAO, and one of their P226 holsters for my 226 SAO, by creating a custom “pocket” in the body shield for the left side thumb safety. I have had Blackpoint holsters on order for those since early April, and recently got a message telling me there would be further delay.
Adjusting these holsters took literally two minutes, and effectively locks the safety in place while carrying. Did the same for previous pistols like my X-Carry with Romeo1.
CE holsters have always served me very well while waiting the weeks needed for the custom holsters I ordered for these pieces, and make good backup carry items once you have the custom job. Or, really, for those on a budget, they do most of what a custom will do, anyway.
Working with Kydex is trivial. Literally a heat source and a (real) Swiss Army knife is all you really need.