I just took this on a 4-day Inca Trail trek so I thought I'd contribute some of my thoughts. This review is for the 28L SL version but should also apply to the 32L.
1) The raincover was extremely convenient - I wouldn't go on a backpacking trip without one! Trekking pole loops were sturdy and functional during the times that I needed to use them.
2) There are lots of adjustments that help settle a heavier load to make it comfortable to carry over 8+ hour hikes.
3) I love the suitcase-like side access to easily get to things near the bottom of the pack - other people on the trek also commented on how convenient it is to have both loading methods in one pack.
4) The zipped side pocket is handy to put in things like a map, sunblock, etc. Very quick access.
5) The front stuff pocket was great - easily expandable to stuff the layers that get shedded during a long hike.
6) I liked the top and inside zipped pockets on the hood - nice for easy-access stuff as well as keeping valuables more hidden.
1) I would like to have more pockets but that might limit how much you can actually pack into the backpack so I just used smaller pouches to organize things.
2) The water bottle pocket is a bit shallow for my water bottle. I'd like to have a deeper pocket so I don't worry about the bottle falling out. However, I mostly used a 3L bladder which fits nicely inside the interior pouch so it wasn't a dealbreaker to me.
3) The thing that I'd like to improve upon the most in this pack is to have a second hip pocket that's actually large enough to put things in. The single hipbelt pocket is pretty small and only has room for lip balm and some tissues.
Given the height, it might be overkill for other purposes but I'd recommend the Act Trail 28 or 32 as a great daypack for hiking, and weekend trips.