I am an avid cyclist and my Mistress recently told me she won't be letting me out to ride anymore. Happy to say I did 30 miles in my device today. Only minimally noticeable and no real discomfort. It did rotate a little when I took off my bike shorts...but I am quite delighted!
This is good to know. I rode in my Holy Trainer once before and it was doable, strange but doable. I just received my JB a week ago and have been running and lifted in it but have been scared to ride. If you say it safe, i may have to try it out.