I've got one on the hybrid and one on the touring bike. I like them. Sometimes, I lean the bike on something, anyway. No problem.
Now, if I had a road bike, I might rethink this. If I had a road bike, it would probably be for riding for the sake of riding, rather than going somewhere, if that makes a difference.
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Some people are like a Slinky ... not really good for anything, but you still can't help but smile when you shove them down the stairs.