The Wilson Sophia speakers shouldn't be any more finicky to set up than any other high-performance loudspeakers. The Wilson Audio Set-up Procedure (WASP) is more about finding the room boundaries and placing the speakers in a place that they don't interact with the room, the zone of neutrality. This procedure has more to do with the room than the speakers. That being said, if you want the maximum performance from these speakers, I would recommend applying this to your speaker position. Your Wilson dealer is obligated to do this setup upon purchase. You can place a little tape on the floor to mark this footprint. You should have no problems moving them from this spot when you need to. Just remember to place them in the same place before listening next time. BTW, please don't put caster wheels on your Wilsons. They will not reach anywhere near their potential sound by doing so. Wilson only uses casters to help in moving larger speakers (MAXX2) when setting them up, after which the spikes replace the casters. Good luck.
Are Wilson Sophia's more finicky about placement?
You hear about exact placement rituals from Wilson dealers during installation ("the last 1/2" etc.) in their promotional stuff, but are Wilson Sophia's more particular about room placement than most other speakers? I have to move my speakers back against the wall when not in use, and pull them out into the room when I want to listen, so this 1/2" stuff would drive me nuts. Yes, I currently fiddle around a bit with my Aerial 10T's placement when I pull them out (they are on a base with wheels, they had that option for use in recording studios), but they sound good even if I'm not particularly anal about EXACT placement. You can put wheels on Sophias, but would that be a particularly bad choice for a new speaker?