Thought about it but IMO someone would have to be about 16 years old (no pains in joints, back, neck, shoulders--), double-jointed (super flexible), 110 lb (so you could breath while your gut is pressed against the fender), perfect near and far vision, perfect dexterity so you don't drop the small screws, magnetic tipped tools, and ~6'4" tall (so you have the reach) in order to work down in that area with the alternator still in place.
Or, an under 4' small person might do it, someone who could squeeze down into the engine bay head first while the taller guy holds him up by his ankles (think Mad Max, Fury Road).
Taking the alternator off to service it gives you the ability to check the slip rings that the brushes wipe on, those can get worn and develop a build-up of old brush material. I take something like a 3M pad or 800-1000 grit sand paper to lightly clean up those copper ring (you don't want to remove much metal), then clean it off with Contact cleaner. Also you can get a better idea IME of how the bearings feel by spinning the pulley.
The job is not that bad and you can take care of a bunch of other PM's while it's apart: clean and check for leaks (timing cover, power steering pump, hoses), replace hoses, belts, pulleys, fan clutch, oil pump cover gasket, remove rust and paint under the battery box. I always find a little rust trying to get a foothold under there, partly from battery acid vapors, partly because water get trapped), the box itself can wear down/scuff the paint to bare metal.
Example, after sanding, priming and painting to protect the metal under the battery box while it's out you can (I did) glue small thin solid rubber pads (cut from a sheet of rubber) to the sheet metal where the box scuffs through the paint. A little OCD but you won't have to worry about rust in that area for a very long time.
FWIW
