Heh. I notice the Ariakas in the picture is left-handed, but the mini is right-handed. (Not that I don't think it's the same character - it obviously is, just look at the sword hilt - but apparently the sculptor didn't pay attention to which hand the sword was in.)
I thought it was canonical that he was a wizard (presumably with some kind of special exemption from Takhisis on the usual rules about wizards wearing armor).
...Although, now that I think about it, Tanis simply assumes he's a wizard based on the magical barrier around him; Tanis not being a wizard himself, he could have made a mistake. Raistlin's intervention allows Tanis to win, and Raistlin later mentions Ariakas as the "one man who could have bested [him]," which both suggest wizard, but again, neither is definitive. Huh.
Okay, yeah, I see where the arguments get started. I'd say the writers definitely intended him as a wizard when he was first introduced, but perhaps they later retconned it over the armor question?