I have two SP101s Frank.
Both are 357s and have the shorter barrel length. The difference is that one is the spurless hammer version. Here in PA, the law is no lasers for hunting, so on the spurless model that can only be fired DA, I added a set of CTC Laser Grips. I really like the set up. If I'm headed anywhere where I think there may be a chance at a "varmint", I carry the SP without the laser. If I'm going out shopping or for dinner, I carry the laser gripped version. (CCW licensed) The SP spurless is just about snagfree designed and can be carried in a pocket holster fairly comfortable. For those that don't know it, PA is Non-Semi cartridge firearms for hunting. Shotgun and shot is OK, but thats about it. Go figure! Take care, Bill................