I've now got top and bottom skins and I use them in almost every training session. I feel they assist with posture and warmth and afterwards my recovery from running. For cycling I wear them under my arm and leg warmers during cold weather. I'm finally winning against the cold.
Finally, after running the Gold Coast Marathon earlier this week, I can testify from personal experience that they aid recovery. Some of the aching in my legs was removed immediately when I put them on to sleep that night. I can't explain why but I felt it.
Felt - B2
I'm now riding the latst B2 Model Felt. After a year on my S22 Felt, it's taking a little while to get used to a new set up. I'm also coming out of a rest period and I feel I need to earn my position on this bike. I seem to be getting stronger quickly though so I think we have to attribute half of that to the bike.