We go on trails and on the road. My husband bought one for himself and I was using a road bike. He thought it would be better for me so he bought one for me too. I thought it was weird to ride it with the road bike anyway. The ICE is just great. I tried the Catrike pocket and liked it but wanted one that folds so I got the ICE. We go everywhere with them. They aren't fast but we can climb any hill.
Thanks for the replies. I have an article from a weekend trip to San Diego that that will be published on-line on Adventure Cycling.