Shannon G.wrote a review of Osprey Packs Talon 22L Backpack on September 2, 2019
This is the perfect daypack for medium to long day hikes. It's comfortable, lightweight, carries well, and has capacity for pretty much everything you might need for a long day in the mountains while not feeling like overkill for shorter outings. It's also totally usable as a commuter/travel backpack, although it's not quite so ideal for that (the lack of a flat bottom makes it liable to fall over if it's leaned up against a wall/desk/etc--not so great if you absent-mindedly set it down with a laptop.)
I'd say the ideal use case is a long day hike with variable weather. I've carried 4L of water (3L camelbak plus 1L bottle), lunch/snacks, poles, several layers (shell, down jacket, fleece), and accessories in this with room to spare. The belt pockets are just big enough to hold items like a normal sized smartphone and sunglasses (although you might struggle to fit a really large phone in there). The dedicated knife pocket on the left shoulder strap is a nice touch too. I have not used the ice ax attachment point on the rear for its intended purpose, but it does provide a nice alternative spot to lash on trekking poles if you want to keep them out of the way. The mesh pocket in the back is great for stashing a light shell, hat/gloves, buff, etc (it's also a nice spot to stow a book if you're using it as a carry-on).
The durability of this bag is really impressive--over the past five years, I've used it for hundreds of days of hiking and bike commuting and as a carry-on on dozens of flights, and the only signs of wear are stains/marks and very minor fraying on a few straps. I expect I'll get many more years of use out of it.
The only (extremely minor) critiques I have are ergonomic details. The waist belt pockets could be just a little bigger to more comfortably fit modern smartphones. The hydration pack sleeve can be a little tricky to load a full 3L bladder in and out of and requires a bit of wrestling to get all the way into a loaded pack. And while the side pockets for water bottles are just big enough to fit a standard 1L Nalgene, it's nearly impossible to securely re-stow one back into the pocket while wearing the backpack--the side straps tend to get in the way. While there's a little room for improvement on these things, they're really minor for how I use the bag and shouldn't dissuade anyone from buying it.