Tyrious is my only non-melee character. I have mainly played with as Fire, which used to be a melee range caster. The only reason I leveled him was because I had his Enchanting worked up so high at the time. I started him after deleting a lowbie Rogue.
PvP: Yes, i’m sure the spec(s) are terrible, but I enjoy what little I do play on him this way. I really, really, don’t do casters. In fact, I haven’t even set up his alternate spec or UI since 4.x. I bring him out to duels, mostly, or when I want to even a PvP playing field by using a character I completely suck at. It pretty much goes with me just randomly spamming buttons (I don’t even know what a few of my abilities do now) and hoping to win. Which is fine, because I certainly don’t bring him out to win. Though I will pull him out if there are a bunch of people in the sky. Living Bomb is awesome.
RP: I don’t really RP with him much, probably less times than you can count on one hand. He’s an older Mage who will pretty much follow the king’s lead. Open season on any Horde for him.