Just came back from a week of day hiking. The Tamrac Evolution 8 worked very well for my husband but no so well for me. Being 5'5" 105 lb and very short in the torso, I found I had to re-configure the harness straps in order to get a good fit - a common problem for me with any backpack. Reconfiguring involves rethreading straps through the buckles. This proved to be inconvenient because it isn't an easy fix you can do on the fly therefore we had to decide at the start of the day who was going to commit to carrying it. We thought one way around that would be to have it configured for my husband's frame then if he wanted me to carry it for awhile I could carry it as a sling (as the pack is designed specifically to make that change easily on the go, much like the Kata 3N1). However, I found carrying that amount of weight as a sling on my slight frame was quite uncomfortable - I definitely need to carry it as a backpack.
There is easy camera access from both sides while wearing it and front access for initial packing. Personal gear is separated in the top compartment which isn't as generous as in the Lowes. It stands up securely when set on the ground so no need to worry about it tipping over. It fits the 17" Macbook so this is a very good bag for plane travel as it meets carry on specs handily. The dividers were originally set up so that extra lenses fit in the compartments that were above the camera which caused some issues getting the camera out of the sides while wearing it because the weight of the lenses bore down on the camera making for a tighter fit. So we changed things and put the lenses in the compartments below the camera and that worked much better. The waist/hip belt is nicely padded, something the Lowes lack.
Gear carried : Laptop compartment: 17" Macbook Pro (not while hiking though, just travel); Main compartment: 60D with 18-200 attached hood in shooting position, 100-300mm hood reversed, 100mm macro hood reversed, macro ring flash, battery charger, lens blower, with ample room left over for an additional lens or flash and my Hyperdrive once I get it. Plenty of zipped pockets in front and side flaps for booklets, cables, batteries, memory cards, filters. Top compartment could hold a light jacket, smallish water bottle and snack. It comes with a weather protection cover which is stashed in its own side pocket and thankfully is fully detached which makes for easy cleaning and drying. I have never quite understood the rationale of making weather covers attached to the bag.
I would recommend this pack for a guy, or a woman who isn't short-waisted or who doesn't need to share and could reconfigure the straps just once to get a good backpack fit. When configured for my body, I found it much more comfortable than the Lowe Fastpack I tried out as I think it has a better harness system.
Diane