My main gripe is the film speed, and I personally wouldn't want to use the back. I shoot film holders, and although they are bulky, they are cheaper for film cost and I can use any 4x5 film. My package is a stripped Pacemaker and some film holders in a regular backpack for city stuff. I can carry 10 holders easily with half of them color, and in a variety of speeds. If traveling tho you'll need a portable dark tent for the holders, but that can be left in the room. If you've the pockets, the Fuji and Kodak quickloads would be the way to go. I guess it comes down to how much your willing to carry if hoofing it. What are you shooting and how far afoot will you be operating?
Btw, I did a cost comparsion a year or so ago and after comparing film cost plus processing by my local lab, I found that the Type 55 was cheaper to shoot by a small margin, but in the end if I was doing my own processing it was cheaper still.