I just got a sleeve at B&N, and am happy with it for storage. I also prefer to read with my NC "naked". I do okay with the weight, but I had a problem with the weight of my iPad, and I used a device that may be helpful. It's called a Peeramid, I got mine from Amazon.com, but they may be available locally. It is basically a small fabric pyramid stuffed to make it firm and self-supporting, that has a built-in little ridge all around the base. You set the Peeramid in your lap, and rest your iPad (or NC, or heavy DTB) on the ledge and it is tilted at an angle that is pretty good for reading. With the ledge supporting most of the weight, it is easy to support the tablet at a different angle if you prefer. Here's the link:
http://www.amazon.com/Hog-Wild-Peera...9991548&sr=8-1
The little tassel came off of mine after a few months, but I don't miss it!