4X 3/0 is reaching the upper limit of the
VS pliers. I've seen them do 4/0 4X but the chance of the jaws shattering starts to greatly increase.
Generally you'll need to replace the jaws afterwards as well. Smaller hooks are no problem though, I had to cut a 1/0 4x VMC last year and I'm still using the same jaws on my VS pliers.
As a rule, NONE of the premium pliers out there (VS, Accurate, Fishpond, Ross, etc.) are specifically built to cut bigger hooks. Most can do it though, with VS leading the way. Braid, wire, mono is what they're optimized for.
Non-titanium pliers like the Accurates will also have the potential to actually bend trying to cut big hooks. Lots of companies imitated the VS plier, most seem to have forgotten that aluminum isn't quite as strong as titanium...