That could be, and the truth is that I've never been real happy with my Slim Jim. First I waited about three months for it, finally called them and they tell me "oh we forgot about it". (El Paso)
Then I asked for a slight, simple modification from standard, and they would not do that.
I never have been able to get the leather to soften up at all, it's very stiff. And, it is, "not-real-Slim", or as slim as it could be in the barrel area. But, it "works" I guess, and it holds the pistol secure. But what I really want is a custom made flap holster for ALL my pistols!