Any experiences with the Roccat Savu?

[RC-1140]

Hey,
As my Razer Mamba has developed some really minor issues over the last months, I started looking for a good mouse, main use would be working and occasional FPS gaming. I read the typical "recommend me a mouse" threads, and looked through some company websites, and found the Roccat Savu. It seems to be pretty new, so I didn't find many customer reviews about it. It uses a 4000dpi optical (not laser) sensor, and apparenty doesn't do much interpolation of the signal. So only 4 dpi settings, but therefore no angle snapping, I didn't find any information about hardware accelaration though. Now I'm not really in the need of a new mouse, but still would like to hear your opinions about this one. I already made some good experiences with the Roccat Pyra, which I use for gaming on my notebook.

RC-1140