I had them installed on my Ultra about 10k miles ago since it was supposedly time to either change fork oil or do the swap. I had recently been on a trip with a buddy who was on a sport tourer and after a back road romp where the ultra just seemed to be constantly floating around I decided to try this instead of a full revalving of the stock setup. I do like the reduction in brake dive and the bike seems firmer and more controlled but I cant say I would do it again at the cost as I havent seen the huge change in ride behavior I hoped for. Perhaps the real issue is the rear end and not the forks as I think the rear shocks have VERY little rebound control and not much compression control either frankly but then again its a tourer, not a sport tourer.. the price isnt astronomical but dont expect night and day differences...it seems more subtle to me...
YMMV
Phil