I purchased one of these last year after reading a number of reviews and posts that all seemed to claim it was the most comfortable IWB holster they had worn. I was considering the Crossbreed supper tuck and the Alien gear IWB holsters as well and decide on the StealthGear. I have a Sig p239, which is a compact but relatively heavy gun at about 30 oz unloaded.
I have been very pleased with the holster. It is very comfortable. While I feel the weight of the gun on my hip (4-5 o'clock), I do not have any chaffing, rubbing, sweating, or hot spots. The holster breaths well and has enough cushioning to take the edges off of the gun. The kydex holster fit perfectly and provided good retention. I can turn the holster upside down and the gun remains in the holster, yet slides out easily when drawn. I recently installed a Crimson Trace hand grip laser and it has fit without modification.
I changed out the standard clips on the Holster for Ulticlips (available directly from Stealthgear). They clip to the top of the waist band of my pants instead of hooking into the belt. With my belt in place over the clips, there is almost nothing visible to indicate the holster inside the waist band. The clips have a very solid grip and I still wear a stiff gun belt for support. This arrangement has worked very well for me.
I have been very happy with this setup and would not hesitate to purchase another holster for my next carry gun.