An airweight hammerless J Frame has very distinct advantages over a Glock (just using the name to pick on semi's in general, because I know Glocks as well as I know revolvers, maybe better). The primary advantage of a revolver over a Glock is that Glocks are prone to FTF on the second round when fired with a loose/unsupported grip, a situation very likely to occur during a SD situation. SD incidents where everybody gets in a two handed Weaver stance and aligns the sights are as rare as the dodo bird. SD incidents are messy and full of close contact, where everybody is invading the other's personal space. In such an up close situation, the possibility of one handed fire from close to your body is very real, and unless you are very used to doing just that, the chances of a FTF after your first round from a Glock are also very real. In this regard, revolvers win. Semi's have other distinct advantages over revolvers, including concealability and higher round counts, and those have to be taken into consideration as well. The primary consideration is your skill with the chosen platform . . .