Rudy is certainly an above-average dribbler for a SG, much better than Matthews.
At PG he's as good as Brent Barry, the 6-5 Rudy lookalike who moved from a hot-shooting starting SG to starting PG after the Sonics traded Payton for Ray Allen. Barry surprised everyone and was really, really good at PG. He dribbled carefully, hunched over, and was just as effective as Payton, which is one reason they dumped Payton. After 1 1/2 years of starting at PG, Barry became so overvalued (he was already a Rudy-like SG) that the Spurs drooled and stole him. Here is Rudy's future:
http://www.basketball-reference.com/players/b/barrybr01.html
By the way, all that happened under Coach Nate McMillan. If Nate has to start Rudy at PG, we'll do just fine.