Pedal NC gives a production Orp a great review.
Here’s a little of waht Jertemy wrote:
“On the other occasions they… well… they popped their head up! The combination between pleasant sound and flashing light is just the perfect culmination of safety needed on a bike. But when we quit pushing the trigger up, and started pulling it down, the quickness of the head turns was much more noticeable. Even the passing cars would tap their brakes as I sounded the horn. It was an amazing experience to say the least.”