I just received the sleeve I ordered from Pack and Smooch. I have a thread with the review, but I might as well add it here for everyone to see.
Like many of you, as soon as the MBP with retina display was announced, I ordered the laptop and started emailing vendors to see if they made a sleeve or bag for the rMBP. After searching, I ended up going with Pack and Smooch's Hampshire Sleeve for my rMBP. I have used their sleeve for my previous 11" MBA and my iPhones and I really like their quality.
The sleeve for the rMBP is no different. It is made of high quality wool and tanned leather. It is precisely cut and tailored to the laptop. I really like how clean and simple it is without adding much bulk.
As you can see from the pictures, there is a pocket the width of the sleeve to fit anything from paperwork to pens/pencils, to your iPhone and/or the charger. I prefer to keep mine empty with the exception of a few papers or bills that I might need to take to work.
Now this sleeve is perfect to protect your rMBP from scratches and making it an extra protection if you put it in another bag. It doesn't have drop protection but I don't think many sleeves do anyways.
This should last me a long time since my 11" sleeve protected my laptop well until I sold it and I still use the iPhone sleeves for both my wife's and my iPhone 4S.
I tried my best to attach decent pictures but checkout the website for better pics and other colors available.
http://www.pack-smooch.com/en/shop/apple-laptop-sleeve-air-hampshire
let me know if you guys have any questions