That's one of the nicest bags I've seen yet. How certain are you about it being able to accommodate an 11" MBA? Would you be able to post a photo with an MBA fitted inside?
Thank you for posting, I'm checking out the Rickshaw website now.
I've got the iPad messenger bag which is, to my knowledge, the smallest messenger bag they offer but it's rather quite roomy for my needs. Just because I don't own a MBA, I stuck my clunky MBP 13" in it. I want to note that I don't travel with my MBP really anymore and rely on my iPad. It's a tight fit for the MBP but the MBA 11 will fit in there nicely with additional space. I even went to Bestbuy and asked an associate if it was okay to test putting the demo MBA 11 in because I'll be picking one up later this month and really want to use this bag to carry it around. Even with the security cable still on, it fit in perfectly! (I also had my work shirt folded up at the bottom though I don't think this is possible doing for a regular MBP 13) Theres enough space to add a notebook or folder for classes if you wanted to once you've got the MBA and an iPad stored in it. I got the nice little organizer that velcros inside to hold my pens, business cards, charging cables and whatnot.
As far as if you wanted even more space, you can pick up their medium or large sized Zero Messenger bag which essentially is the same thing as the iPad Messenger bag, just bigger and has the option to have a dedicated laptop sleeve.
Here's a pic off Rickshaw's site. The bag they've selectively colored is the Zero Small which is the same size as the iPad Messenger. The two next to it are the Medium and Large!
The thing I liked most about the bag was the option for waterproofing since I bike everywhere to get around and keeping my iPad and notepad/lunch/etc dry is always a great thing to have. The drawstrap on the shoulder is helpful too because I often find myself loosening it up to hang lower when I'm just walking around and then tightening it up so it won't move when I'm on my bike.
Here's a few pics I took if you wanted to see. I apologize about the orientation of the images. Posted these on the go. Hope it helps!
I'm looking at picking up a custom Rickshaw MBA 11 sleeve when I pick mine up this month!
P.S. If I can get a hold of my buddy who owns a MBA 11 and has it in a Twelvesouth BookBook case to try it's fit out in this bag, I'll definitely post pictures.
P.S.S I totally forgot to mention they have a 30 day guarantee and lifetime warranty which is kind of what made buying this bag on a whim a lot easier. They say if you don't absolutely love the bag for any reason (be it the colors you chose, size or whatnot) then you can return it and get a refund. In my order, they already supplied a return sticker if I wanted so shipping back is already paid for by them. As for the lifetime warranty, if there's wear on your bag over time and you find stitching coming loose, you can send it to them to get repaired for free.