Having ridden the following:
MTB – Enve XC, LB XC and 38mm wide
Road – Enve Smart 3.4, Farsport 38mm and LB 35mm
I can report there was no difference in ride or feel (I have yet to find out what a ‘dead’ wheel feels like) between ENVE MTB wheels. However on road the 3.4 do hold their speed better and this is due to the design and not the Enve Carbon.
My Enve wheels can with bikes on stock build, keeping my road rims but sold my MTB rims. As for the quality / finish it hard to tell the difference. Also the Enve internal nipples are a pain.