The owner of an experimental does not usually help an A&P with the annual. Either the A&P does it by themselves or, in some cases, the owner does it by themselves. But it's true it will need to say "experimental" somewhere that all passengers can see it (headrests are a good option) and have a somewhat scary-looking warning placard about it not being certified. But this is true of all experimentals and yet there are tons of them.
It's illegal to hire a pilot to fly off the 40 hours because it's illegal to hire a pilot to fly any experimental for any reason; it cannot be flown commercially. CFIs are the one exception (so they can instruct in experimentals) but they need to file for certain paperwork allowing them to do that.