I rode in today with my 7" tablet in my pannier. It is kept in a sort of padded REI travel wallet/waist pack type of bag. Seems pretty well protected. A big crash would probably damage it, but I'd then have other problems too.
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Gunnar Sport
Specialized Ruby
Salsa Vaya Ti
Novara Randonee x2
Motobecane Fantom CXX
Jamis Dakar XCR