I'm about to buy a 15 Inch Macbook Pro. I'll be purchasing the Hurley Pinpoint Backpack, but also want a sleeve for it. Seems like the best option is the Incase Neoprene Sleeve, but it has mixed reviews. For those of you that own it, could you please help me out with these questions? (1) Does the black sleeve stain the Macbook as people report. (2) Is it strenuous to fit the Macbook in the sleeve due to its tight fit? If so, does it stretch out? (3) Does the zipper scratch the Macbook? Will being careful solve this? Any other feedback you might have will help tremendously!