I have always preferred to "cock" a handgun, I can shoot much better that way. When you shoot "double-action" the trigger pull is so much longer. Not carrying concealed, the hammer spur is no problem. As I think back, the only "hammerless" hand gun that I have owned was a High Standard model B.
I also owned a Makarov, my son has it now(the other son has the model B). It is one of the Russian made jobs that has the adjustable rear sight and it is a .380. I would like to have one with fixed sights and in stainless, it would make a great pocket pistol, a poor mans PPK. Actually, the PPK has adjustable sights, at least the ones that I have seen. Am I rambling here?
Back to the SP101. I like the longer sight picture of a 3 inch barrel over shorter ones, so I would not consider the 2.25. I would be carrying openly, so the 4 inch barrel seems better yet, plus it puts a little more weight up front when shooting .357 ammo. Why not just get a GP100? I have never held one of them, but larger guns like a Smith 66 has more grip then I need, I like the smaller grips better. I also like a 5 shot better because the notch is not right over a chamber where the metal is thin. To each his own.