I use the mouse on my Mac and HP laptop.
The difference I know is that the Win version has a Bluetooth connection and a USB Unifying Stick. The Mac version does not have the USB Unifying Stick.
On both systems I only use the Bluetooth connection, which is switched under the mouse. (Channel 1-3)
And that works perfectly.

I have this model and I use it with both my Mac (Pro Book) and my hp notebook.
I haven't noticed any noticeable differences.
I think the Mac version offers a different connectivity/interface fit, but that's just my suggestion.