It would never cross my mind to use scissors on a pizza.
There are kitchen shears (also called poultry shears) but, if you're going to be cutting pizza much, either one of these
or one of these is really the way to go:
I always break pizza cutters. I use a sandwich knife with a 12" blade.
I wouldn't mind one of those cutters they use at pizza places.
If your butcher knife is one with a rounded edge rather than flat, though, it ought to do.
I'm afraid to use my enterprise pizza cutter. It has no guard on the blade and looks like a good way to cut your thumb in half.
That's exactly the reason I never seriously thought about getting one of those - was not
designed for safety.