I actually really like Neves' art. I wouldn't mind it if he and Mann rotated throughout the series. It's the other guy's art that I'm not very fond of.
In fact - and I know this is gonna sound crazy to some of you - I prefer Neves in some respects. For example: while Mann is great at making Gambit look sexy, one thing that Neves defintely has over him (imo) is that his Gambit actually has facial expressions. I also found it a bit easier to tell what was going on in Neves' art. NOT that I'm complaining about Mann. His art is still awesome. Just had to put that out there.