To OP: I am leather bias, for single clip leather IWB, my favorite is MitchRosen CLIP, I find it best suited for subcompact, and each of mine have their own CLP (G26, PM9. CM9). It is straight drop hence allowing me to place it anywhere from 2 - 3:30 position, mouth is reinforced by a steel band for ease of re-holstering. The steel clip is one of the MOST strong I have come across. Note that it has a LOW ride which I prefer for Subs (supposedly for "deep concealment"

), but some may not like it. $60-ish new, $40-ish used.
I also have VMII for my compacts and they are indeed THE best. Used would be in low $100, <$100 if you got lucky.
I just bought home a Shield9 on Tuesday -- my FIRST S&W, I have found that it fits TIGHT in my rigs for G19/G26 (possibly they have the same height from top of the slide to bottom of the trigger guard). It even sits tight in a Remora 3B which is for my CM9!!! So, I am in no rush ofr rigs, but I still probably go buy a CLP
Heck.. after tightening the Blackhawk SERPA for my Glocks, it takes in the Shield with a solid click too!
Happy shopping!
Some ride height comparo for your ref: