however, i can now attest to the ruggedness of the genuine topcase. i was going *maybe* 25mph on my neighborhood street. didn't hit a hole or big bump, just the normal street conditions, and blewy! my topcase flew off.
using my side mirror, i saw it tumbling in the street. fortunately, there was no traffic, i pulled over, did a u-ey and parked. when i retrieved the topcase it was deeply gouged and scratched up in a number of places, but it didn't dent, fly open (it was locked), or disintegrate before my eyes.

after i retrieved the case, i looked in the street for the bracket but couldn't find it. upon further investigation, it was still attached to the case. huh? weird science there, eh?
anyway, that little testimonial should tell us something about the sturdiness of the new genuine topcase.