Cheers Simon, it's safe, the loop hangs in a semi circular arc off the bottom of the starter handle rather like the step/loop on a speedbar.
Mark, I have experimented with the straps, I have about a foot of strap sticking forward of the buckles. It could just be my shoulders not being able to reach back as far as others but I have heard of other owners with similar problems. It is worse when wearing lots of layers. One time I stood up and found it impossible to reach because the handle had swung round and layed flat against the cage however I overcame it by going down on one knee and allowing the motor to be pushed up my back by the back of my knelt boot pushing the bottom of the frame if you can visualise. The frame is then much closer to the back of my neck and the handle is within reach wherever it hides.
Cheers
Nige