I'm about to buy myself a Smart Cover, and putting the price aside, I love the look of the black leather one. My question is, are there any major issues with the leather ones? As noted on Apple's website, it says some of colour may rub off, is this noticeable/does it happen a lot? Also, how easily does it stain? Fingerprints? How about cleaning the leather? The iPad 1 case was simply a matter of water and a microfiber cloth, what's the method this time round? Help from anyone with a leather one would be appreciated, but especially if you have a black one. Cheers!