Like I said,"just an observation". Off-topic for a second, I don't doubt their trips are fun, but I wonder how sterile they are. It seems like they have their logistics down in terms of shipping your bike from A to B. Anyway... I personally have never used a top-box, so I can't give any for them, but after read the posts here I can surely see how they're useful when commuting around town. I'm more for the stuff-sack/dry-bag arrangement myself.