I have the Jumbo. It can be an excellent EDC, and it can be a horrible EDC, depending on when and where you are going to use it. If you will be very active, avoid it like the plague.

I first used it in NOLA last year. Most of the time I was stationary, or walking from place to place. It was excellent. I almost always had everything I needed, and things were very accessable, unlike most backpacks.

I recently used it for a Winter Wilderness Medical Training week, and it was horrible. Much of our time we were mobile in rugged terrain. The Jumbo did not travel well and was always in the way. It does not work well with bulky clothes either.