I have a 13" MBP and bring it to college 3 days a week. I use it to record lectures and take notes. I want to purchase a sturdy sleeve, but not interested in the bulky speck. I am between the InCase or the Be.ez. Any thoughts on these two? Are zippers on a sleeve truly a bad idea? I read a few posts where people do not recommend... but has anyone ever experience scratches from zippers on a sleeve that was specifically made for a MBP? Does anyone know of any decent sleeves that are "work-in" meaning you can work on your MBP while it is in the sleeve? Is it a bad idea to use your MBP while it is resting on top of the sleeve? Trying to prevent scratches on the bottom of it while using in class. Any advice appreciated Thanks!