The Laptop that we used in the main page animated GIF is a 17" macbook pro. It just fits, and you can zip it up but with it forces the bag. We recommend any 15" laptop or below is perfect for the Blade:)
Sorry but the handle is a very tricky construction element and can't be removed, but it doesn't get in the way when used as messenger or backpack. I have been using the prototype for over a year and its been very comfortable.
Don't see the answer to your question? Ask the project creator directly.