I hate the swimming technique too, I'm always afraid they'll have my eye out en route.

My Rwandan friends shake hands and hold on at every meeting, it's a continuation of the friendly encounter, and the longer they hold your hand, the better friend or family member you are. A short hand hold, more sort of talk on the bus sort of friendship. A long hand hold, deep meaningful and loving relationship.

It's quite offensive to let go their hands before they've finished, because it means you don't want to be their freinds any more. Strange sort of custom, but one I like.

LTS