I have the Crumpler 5MDH for my 5D and it usually is too small, I don't like carrying much but I want it to be easy to use, if I just carry the camera with a 24-105 or 16-35 and my wallet, checkbook, personals, extension tubes then fine but if I want to put my camera with the 70-200 attached it won't fit, it's just a little short. I used it today for a while just to keep the camera out of sight part of the time and it worked well but I use my longer zoom more than any other lens and just haven't found a way to make the 5MDH bag be workable, yes I can fit a bunch of stuff in it seperately but I need loose space for putting stuff as I make lens swaps etc. it's just a bit too small. I've tried just carrying the camera with one lens on and then two spare zooms and tele-extenders etc, but didn't like it.
You say the 6MDH is much bigger, that's a concern but I'll just have to look. Of course if they are starting to decorate them then it'd be really cool if it was just the right size and looked kind of like a general purpose diaper bag LOL, surely wouldn't be taken so seriously.

