The thing about the Muzetto is that it is casual enough looking that it would be hard to be sure what someone might be carrying in it. Unlike most laptop bags it isn't immediately identified as a bag which could have a computer or iPad in it.... Yes, Chip, I would love to have a little more space in mine to also toss in a Leica.....the M-9 would be nice, thanks!
Actually, the Portable Muzetto holds a fair amount of extra stuff such as wallet, sunglasses, keys, etc.....
Today I went to spend the day with a friend. She immediately admired the Muzetto and is considering one for herself and her iPad, too....great for travel and she wouldn't need to take a purse, too.
To answer the question about the 13" bag.....when going to see my friend today I took both iPads (I have both the WiFi and the 3G). One iPad went in the Muzetto and Smart Case and the other,wearing the Belkin Clear Vue, went in the green InCase iPad sleeve. I then stashed this in the 15" InCase case I had bought long ago for my 15" MBP, and it worked a treat. The 13" would have done equally as well, if I had happened to have one.... The reason I took both iPads today was to show my friend some possibilities in accessories and such before we went to her local Apple store for her to get a few things.
It seems to me that buying a 13" Muzetto which could be used with either the MacBook and the iPad would be a great idea!