Is the wireless on the Razer Mamba mouse good?

I am planning on buying the razer mamba wireless/wired gaming mouse soon. I was wondering if the wireless is still good (no lag) with my desk in between the mouse and charging dock/wireless receiver because I have one of those slide out droors for my keyboard and mouse. The mouse would be barely under my desk. Would it still work good wirelessly with my desk in the way a little bit? I guess that's something for me to test but I would still like your guys' feedback. I can put my mouse and keyboard on top if needed. the edge of the desk, even being curved and not sharp like some desks, still puts pressure on my wrist when i rest it there so it would take some getting used to though, so I would like to refrain from doing this.
 
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