IWB holsters that use retention on the weapon mounted light only?

I'm researching IWB holsters that use retention on the weapon light only, like the Vanguard 3 and the Armordillo X-Fer.First, are there other ones that I haven't discovered yet? Second, does anyone have any experience with these holsters that they'd like to share?The idea of a single holster that can accommodate multiple pistols with the same TLR-1HL is pretty cool. via /r/CCW http://bit.ly/2PfE0jY