How practical is it in daily life? Does it allow you to just install apps and not have to tinker too much like a "regular" phone?
Hard to say what a "normal" level of tinkering is with Android, as I have switched directly from iOS to Graphene and have never used Stock Android. I am sure some things are a little bit more cumbersome, but for me the tradeoff is worth it.
Also the stock g-cam (with internet access disabled) and g-photos (with internet access disabled) make a pretty amazing photo and photo editing experience.