Not sure in regard to Xai but I recently had real bad problems with a SteelSeries purchase. There was an offer from Overclockers.co.uk on a Kinzu mouse with gratuitous mini mouse mat. Didn't have time to check or test item due to lack of time, reported item (Black Scroll Wheel) had reversed 1st and 2nd button settings, on the 30th Day after purchase and was told that time limit was over. Contacted Steelseries and was notified that this item is not their Official product, it was an old pre-retail model. Steelseries kindly requested more information so they can replace this item. The only problem is that they have now blocked my Registered Account so I'm unable to enter their site with any specific information to continue for RMA. TYVM SteelSeries.
All in all, it was a bad experience, not because of the cost but the feeling that they would treat their customers in such a manner.
I would advise to keep away from SteelSeries products, maybe search through the recent Pointing Devices from Razer's site. So far I have had nothing but good thoughts of Razer devices for about a decade. Others may have different opinions but this is my two Shillings worth. Bad product after sales.
Could of just change the mouse button settings in the Control Panel, but that then it would conflict with my other Pointing Device.
I know it didn't answer your question, but just wishing you will not be as disappointed if you went and purchased this Xai.
I purchased a new Kinzu mouse but I'm still relying on my trusted BoomSlang.