Is it legal to carry that knife around in your pocket? i thought knives with longer that 3' blades weren't Legal
Depends on the state, and probably city if you're somewhere big like Chicago or NYC. It seems here in PA there's no length limit. But I'm not in a position to give legal advice for anyone else.
(I hate to talk down my own merchandise, but this knife is probably too big for day-to-day carrying.)