So I have read several times about how the M&P, SD and Sigma all have the unique ability to fit in holsters made for the other. I am starting to think this only applies to Uncle Mike's nylon holsters and perhaps Fobus (neither of which I will ever own). I never bought a dedicated holster for Sigma because I never carry it. I never bought a dedicated holster for my SD9 because I have several nice rigs for M&P's. Then today I thought, what the hey I will carry the SD9 in place of my M&P. Nope. Would not fit or would not fit well enough to carry. Here's the list of what I tried: G-Code XST, G-Code OSH, Safariland 6377 ALS, Crossbreed Snapslide and Cane & Derby Pardus. It would fit into my Alessi belt slide and my Galco Wraith, but it was VERY tight and would hinder my draw for sure. Anyone else have a holster that fits the SD9 and the M&P? Anyone buy a dedicated SD series holster? I suppose I could get a Galco Yaqui Slide that will fit about anything, but I don't really care for holsters that only offer minimal pinch retention.