@ZUBI, mine is even better.
Regarding to y-axis debate, after thinking a bit i'm neutral, if it produces the same thing that Gaming mouses (and these are allowed) there's no reason of why it should be not allowed (or disallow both or allow both, although it's hard to detect as it seems). Tho, i can't speak at all about this topic since i'm not really involved in these y-axis things and don't really know how they work at all, but i think it's bannable because produces an advantage against other players (correct me if i'm wrong).
And if doesn't produces advantage, what's the point of using it?
My suggestion? Juan's opinion. Use default sens to avoid getting in troubles and non-sense discussions.