When I had a Trice, I used to regularly forget to take the handbrake off. At the time, Peter Ross had a two stage brake lever, that could be locked on lightly or somewhat more solidly. If you parked on the flat, it was only necessary to lock it lightly, and it was easier to release then. It was quite possible to cycle off with the brake like that, but definitely a bit harder. I remember doing it with the shopping once, and initially thinking that the shopping was just a bit heavier than I expected!