UCD with switching mode power supply

Can anyone comment on the UCD performance with SMPS and linear power supply?

Thanks! Very exciting! saw some good comments on diyaudio.com about the coldamp SMPS with Ucd. Would be intereting to know the performance! I believe Jab-Peters and Bruno is developing a SMPS for their Ucd. Would be nice if you guys, as a dealer can test drive their SMPS in teh near future!