Highlanders are like any animal.  You get good 'uns and bad 'uns.  We have a small fold, only five of them and only one is one that is a bit skittish.  Not nasty, but not friendly and a bit flighty.  Her daughter, on the other hand, is the sweetest, calmest thing on the planet.  We don't de-horn.  We're just careful.  Very careful.  I think with polled animals, it's easier to be complacent.  With enormous horns waving around, you're always on your toes!
All of that said, I quite fancy a couple of Guernseys as well...  Anyone have some?