Ok, did some more reading on this. The reason I'm feeling shimmy in my steering wheel, which I didn't previously have is because the beads do not work well for lateral balancing..
I had a type of hopping, or radial balance issue that existed before and that is completely gone.
This makes sense as the beads use centripetal (radial) force to work, which throws them outward to the edge of the tire. This force will by massively greater than the side to side (lateral force) so it would be very difficult for the beads to move and compensate for this type of imbalance.
It makes me wonde if trying more beads would help, as maybe the could redistrubt across the width of the tire, but I'm sure you can get to a point of having excessive beads and ruining your lateral balance.
I'm hoping the place I had these mounted at can do a lateral balance with wheel weights while leaving the beads in for radial balance. They were skeptical about these and warned me they would charge me again to have to break the bead and vacuum these out.
long-ass story slightly longer: for future people wanting to try this out I would advise you to have your wheels checked for balance before installing these. If there is a minimal amount of lateral balance issue these would probably be successful and you could then add them thru the valve stem.