Sticks are banned from my event for a couple of reasons:
1/ They give an advantage as they take strain from the legs during climbs. I know everyone can carry them to level that out, but it's a race and not the LDWA like Smithy points out.
2/ I have seen many occasions where are folks get spiked by them as most folks who carry them are the equivalent of drivers of German cars, ie. turning off unexpectedly without giving any notice.
3/ You look like a tw*t with them, also goes for Garmin in urban England, compression socks etc.
This year there will be a special award at my event for those special insecure folks who need all this crap to run.