Polo eBay finds/marketplace

I saw the XTR when it was on sale by the original seller, almost bought it hand it not been a right hand lever setup. Yeah, it's just aesthetics as you can flip the lever around and run it left handed but haven't you heard that 2014 is all about the aesthetics? ;)

So explain to me where any air in the reservoir will collect when you run a right-hand lever on the left, flipped. The cover does have a rubber seal on it but the total volume of the system needs to increase as the pads wear. That volume increase should be at the reservoir and having things upside down will result in spongy brakes.