Just starting on electics...I dont have much of a problem changing them on m acoustic...Guitars would be epi sg custom and fender 72 tele deluxe..
about the same really... Chaning strings on a non floyd rose shouldn't cause any problems.
I agree with HeliuM its not really that difficult. Its just kinda boring to do.
as long as you have a string winder, its easy lol
Electric string can be pain in the butt with some type of bridge.