Its highly useful but I'd recommend most use f-droid. I think its a little safer and their process is a bit better with respect to avoiding broken builds and releases.
Discussion
When available, definitely.
Would more use this when it's not available as many devs don't spend the time to get on F-Droid understandably.
Hi Seth, have you seen this video about f-droid’s security issues? Would love to hear your thoughts. https://youtu.be/lAbgeJau3eE