yes, it is not too bad. If you are just doing the bottom wishbone, I think you can take that off without having to split the top balljoint. If you are doing the lot, the splitting of the top ball joint is the painful bit. If you need to take the top balljoint off the top wishbone, just count the revolutions you unscrew to be able to put it back.
Easy really.
Graham
PS easy apart from the whole bush in/out pressy thing!