I don't know about that bag in particular, but I need something like that.

I do IT support work, and Ride or walk 90-something% of the time.

I carry around a buttload of computer gear, and while most messenger bags are well suited for carrying a lot of stuff comfortably, the 1-pocket design leaves a lot to be desired for organizing lots of little stuff.

I've got a Trager Courier that I've been carrying for about 4 years now, and while it's perfectly well suited for work, the straps leave a lot to be desired. The shoulder strap loosens over time, and is difficult to tighten.

The waist belt is essential for riding, but it's useless as it comes from the factory. The snaps that attach it means it always falls off. I cut the snaps off, and had it sewn directly to the bag, Both Buckles used to adjust, but I mede one fixed. now I only lose the other buckle occasionally.

Needless to say, I'm ready for a new bag that will organize all my gear. stay put when I'm on my bike, and not require a lot of fussing to get it adjusted and keep it that way.

Most messenger bags make sense for messengers. They are also great any time you need to haul lots of bulky stuff. Who has a good bag for hauling and organizing techie stuff?