The original bearings that were new came in the latest BRP rebuild kit. Then, I ordered a 2nd set from my BRP dealer as I felt I might have compromised them.
But to answer the question, I don't feel the SC rebuild is very difficult but they are a little touchy. It would definitely be a plus to have done one or two, before I would say its worth doing, or its easy. I made a mistake on mine & cost me a set of bearings. The workspace must be as clean as a surgery table too or its going to have a short life. In my case, I would have been better off sending it to somebody like hfGreg as he offers a pretty good price with oem parts. But, If your a hobbyist like myself you might find it entertaining or rewarding to do it yourself. Not a big money saver, especially if your only going to do one, or two.