For what it's worth, I definitely advocate airsoft as a winter training tool but it does not replace dry firing ! Just came back to IPSC after 8-plus years of other hobbies and I credit airsoft for getting my level back on draw, trigger control, bizarre start positions, reloads, etc.
I picked an airsoft Hi Capa 5.1 while waiting for my actual SV and shot the hell out of it. It just died after 15000 rounds (bottom lugs sheared, just like a real one...) and another one, open-class and all metal this time, is on the way. Just beware of all the cheap equipment in the aisoft world, like C More copies with sub-standard lenses (aka See No More), fake CR Speed holsters, etc.
Of course you can carry it too far like our friends in the Philippines or in Japan (short stroke slides, 1000+ dollars open guns, etc.) , but since they don't have the possibility of shooting anything else I guess they have an excellent excuse.