RMS adjustable struts - noise, harshness?

Well, they're installed and I've got my definitive answer: No, they do not create extra noise, vibration, or harshness. Car doesn't forget where it was headed any more when I hit a pothole or streetcar track. Pretty sure front-end guy dialled in another degree of positive caster for me (it was +2°, I wanted +4°, he said no way, we compromised on +3°). Next step…either a front sway bar or a Firm Feel steering box.
(Didn't find the loose bolt or ??? we were expecting to find at the right rear corner that is causing a "Crr-rr-rr-rr-kk-kk" noise sometimes on acceleration from a stop and sometimes randomly while driving along…I now suspect the shock absorber may be faulty. Stay tuned.)