The best stands seem to be the ugliest and heaviest, I have one of the 2 leg center stands on our tandem. It works great but it IS heavy and seriously ugly, but then so is our tandem LOL. I won't put stands on my higher end stuff but the beaters/utility bikes get stands. As to potential damage to the stays as I recall the Berkeley was pretty far down on the pecking order and probably had HiTen stays and fork. If a kickstand makes it easier for the better half and encourages her to get more use out of the bike it would be a no brainer for me.