told ya! LOL
I installed mine over the weekend. You can do it one at a time AND on the side stand but it's easier to use a lift if you are by yourself.
I had mine on the side stand, jacked up the preload on the L side and removed the R side. The bike will drop slightly on the R side. I then lifted up on the luggage rack and EASILY popped on the R side shock.
I then jacked up the preload on the newly installed R shock and removed the L side stock shock. THAT side dropped a little bit more because the weight of the bike is on the side stand. I wasn't able to lift up on the luggage rack and pop the L side shock by myself. I needed a second set of hands but believe me, it was just for safety reasons. I didn't want to lift the bike off the side stand! LOL
So a lift if you are by yourself and if you have a second set of hands (even your wife or one of the kids) you can do the job on the side stand.
(hope this helps)