Actually, Allan, I spelled it wrong. It is
Stanrite. The model I am talking about looks like their "backpack easel" seen here:
http://www.cheapjoes.com/artsupply/S...pack-easel.asp
The nice things about it is it is both practical and very lightweight. I bought a plastic office organizer tray that I lay on the flattened leg supports in the middle. But you could just lay your case out instead of the organizer tray. (I carry all my supplies in my backpack including the tray, my palette, paints, brushes, solvent, medium, etc. Credit for this goes to a highly organized artist friend of mine, btw.)
Enjoy your trip--it sure looks like you have all you need.
p.s. This link doesn't fully work. You will be directed to Cheap Joe's but then you have to type "Stanrite backpack easel" into the search box.