I guess we all know most small electrical devices come with combo screws that purport to allow slotted, Phillips or Robertson drivers but the only one that really works is the Robertson. Well played Canada
I just did pretty much a complete trim out at my house after the flood (replacing every receptacle and any switch that got wet). I had lost my Klein 15 way in the confusion and I couldn't come up with another R-1 so I started with a Phillips and a slot blade. Several stripped heads and a stab wound later I stopped. The first time I got out, I bought an R-1 bit and a R-1 screwdriver. The worst seems to be the 6-32 that screws the device in the box. Nothing really works but the R-1. (especially if they get a little rusty). I have a box of pan head SS 6-32s with Phillips heads that I have been using lately but these were from earlier before I realized everything in Florida rusts.