Their web site seems to have vanished (www.morganoakley.com) and I don't see anymore of their bags on the usual places (like ebay or Lisa Kline).
I really liked the Ditch bags too and now wish I would have bought one. Always thought of them as classics bound to be around for a long time. There always used to be dozens of them on ebay, but haven't seen one in ages.Muse Ten has this cute black Morgan Oakley tote on sale:
http://www.museten.com/store/pc/viewPrd.asp?idcategory=&idproduct=614
Now I wish I'd bought a Ditch tote when I had the chance! I had a cobalt one but sold it because the color didn't suit me. Shame, I really like Morgan Oakley bags.