G.P3842453 wrote an answer about Dynafit Stoke Ski on February 22, 2012
Dynafit Speed skins are mohair - Ascensions are nylon. Mohairs have much shorter/thinner plush, weigh less, fold up smaller, and glide easier. That said, they will not climb as steep, nor will they last as long as an ascension skin. I have yet to encounter a skin track so steep that the Stoke+Speed skin had any trouble, so other than the durability - the Dynafit skins are superior to the BD ones in every way for my use.