stealth gear onyx

I'm curious if anyone has run an S9-A1 in a SGO M-A1 IWB Holster? SG doesn't make a holster for the S9 or S40 specifically, but they do the M series. Since the fronts of the guns are sortof the same, I was wondering if this would work? Of course, if you're bored, or just need a good cause to...