I've ridden on the nasty city streets of Chicago and singletrack as well, and most every bike I've ever owned has had a kickstand. I've never had an incident caused by my kickstand. No, I don't own any carbon bikes, and I'm a Clyde, so the last thing I need to worry about is the one pound or so that a Greenfield stand adds to my bike.
That all said, the worry I would have with the "lean the tire against a pole" method is that you are now putting the entire weight of the bike on one spot of the wheel, and it's a side load at that. I have to wonder if you are not asking to put your wheel out of true by doing this? Thoughts anyone?