As an SAK fan, it's hard to admit this, but the Style screwdriver is much better than the Classic SD's. I am an owner of a Style PS. Got it for when travelling to bladeless areas that don't have metal detectors; like hospitals; in the case I do need to cut or tighten something because my old combo of strap cutter plus SwissCard (knife removed) plus Nite Ize Doohickey was poor. You have much better reach (the entire length of the tool, as opposed to just the tip). It will work on the screws on your glasses, No. 1 Phillips screws, and No. 2 Phillips screws.
I think the Style CS, is in many ways, better than the PS. You have Micra scissors, not the flimsy ones on my PS.