He's not that much of an upgrade offensively to Dixon and a lot worse defensively. Dixon can be useful sometimes because he can defend. Remember when Mitchell took Calderon out when Parker was lighting him up and put Dixon in?
I'd be happy with him because Dixon's not a PG and Martin's half of one. Boykins is a good step up. He has his flaws...but I rather a real point guard than Martin or Dixon. He has some experience.