Thanks for the suggestions!
I agree about not wanting to endanger my ereader in the garage. I have a paper manual in the garage and intend to keep using that there. But the official Honda shop manual for my bike is the size of a calculus textbook, and my luggage is heavy enough without it! The electronic version will be to carry on road trips, for emergency use only. With luck I will never need it, but compared to the cost of a tow and the loss of days out of the middle of a vacation, the ereader might not inspire as much protectiveness.