Stillpoints Ultra SS under your speakers?

Hi,

I'd like to hear anyone's experiences with replacing their speaker spikes with the Stillpoint Ultra SS isolation/vibration control devices. I did a search and found a few related threads, but I would like to hear more. I want to try them under my Merlin VSM-M's, and yes I know Bobby will strongly disapprove...
BTW, if it matters, my speakers are on a carpeted suspended wood floor.
Thanks!