I bought this mug a few months before my AT thruhike, and used it through the entire hike and other backpacking trips.
Pros: lightweight, strap handle is perfect fit and snaps easily on my pack, better insulation than expected, lid stays pretty secure, easy to clean
Cons: The main downside is that the cup itself has a tendency to slide out of the cloth holder, especially after daily use. I lost this mug a few times out of the holder (and luckily only had to backtrack a little bit because I happened to notice it was gone), which is a big problem when you have very few supplies and everything is essential. I “fixed” the issue by putting duct tape on the bottom of the plastic cup and making it adhere to the bottom of the cloth cover, but I had to redo it every time I gave the mug a good washing.
(Top image photo cred: ReviewOutdoorGear youtube channel)