Safe or scary to roll a big bike up and down an 7' TH ramp?

JMO but I wouldn't want the engine running. Too much chance of stalling the engine and getting off balance. I prefer using both brakes since I don't want to risk turning the engine over backwards. But whatever works is all that matters.

I love backing out the wife's maxi-scooter, since it's an auto-shift both brakes are on the handlebars. Makes backing out a doddle.