So the zip leather organizer just showed up, I got it on Amazon, I can't post a link yet but a link is on pg.6 post #127 of this thread.
Quality is nice but I really don't think this will work with a SP3 with type cover. Reason I say that is sliding the SP3 into the pocket I have to push it down there pretty firmly to get it past the zipper and it fits pretty tightly. I got the 13" Retina version as the dimensions for that unit had the highest height measurements which I wanted to ensure the type cover would have plenty of room. The sleeve that holds the SP3 only has a expandable side on the right side (next to the zipper), the left side and bottom are stitched to the organizer itself. If these were expandable as well then there would be plenty of wiggle room with no pressure on the type cover and surface. If you are going to go without the type cover than it fits pretty good, a little snug but not nearly as bad as with the typecover. I also put in a small usb powered external hard drive in the pocket on the left site and closed the organizer, that seemed to make it a little tight to zip it closed adding even more pressure on the SP3. There is no way you are going to fit the power block in this thing. It's a shame, I was really hoping this would work for me. It's very nice though and I will keep it and find other uses for it. Just thought I'd share my experience for those who were looking at it. There is a 15" version but honestly I think that would be way too big as I was a little surprised as of to how large the 13" unit is (10.75" wide, 15" tall, almost 1" depth).