I just ordered the Caselogic UCS-13 13-Inch Felt Messenger Bag with Laptop Storage (Black/Gray) from Amazon. I have another bag on custom order from a seamstress but knew I wanted more than one option for carrying my NC10. And my custom girly bag won’t be here until much later this month.
This Caselogic messenger is $29.99 USD and has some decent reviews on it. I will report back after I have had time to use it for awhile.