Lowers service, there’s little reason not to do it yourself, it’s about as hard as changing a tyre. I always say if you can pour a shot, undo a bolt, and wipe your bum, you have all the relevant skills to do a Rockshox lowers service.
Full service, is a bit less clearcut as there’s 2 parts to it- one is the service itself, the other is the informed eyeball making sure everything’s actually working as it should be, catching wear and tear early, etc. I’m a good spanner but I still like to get forks seen by someone better informed than I am from time to time.
Frinstance, my Revs blew out the positive spring. I could have opened them up, rebuilt with new seals etc and it’d have worked but I probably wouldn’t have spotted the damaged part that caused the spring to blow in the first place- it wasn’t obviously wrong.