MVAMs can use PSW. I see it all the time in PvP.

As far as torpedoes... I prefer quants b/c they hit harder. Some people like photons b/c of the shorter cooldown. I think both are valid.

I'm hoping that one of the upcoming "new" ships... like the Ent-F... will have a LC Sci BOff so cruiser captains can get their hands on Scramble and PSW.