If you really feel the need to have it hold open, you can buy a kit for the 10-22 ( and pay through the arse for modified mags that work with it, taking it as a given, that you don't have the skills to build the parts and modify the mags).
Personally, I could care less. Shoot till it clicks, reload, carry on.
Dry fire a 10-22 all you want. As long as you put the bolt back together correctly, there is no way for the firing pin to reach the face of the chamber.
If all you ever do is shoot at the restricted rated range, the S&W may be for you. It ain't for me. If I could take it out gopher whacking, maybe, at which point, the hold open would be the least of many criteria that I would be shopping for, trying to decide.
Cheers
Trev