Wall-Martin I'm fine with. Not like..blown away or anything, but okay.
I remember reading an article awhile ago that basically concluded that as good and efficient as Martin's offense is, his defense actually negates that so much that he's a net-negative player. I think that's colored my perception a lot. The idea of he and John Wall trying to contain opposing guards scares me a bit. Also, Martin has a reputation for being one of the softest players in the league, which is another knock against him.
Of course, like I said, he's a better NBA player than Monta Ellis is, even though Ellis is the better scorer and the better defender. Monta just won't buy in.