My team is very used to strangers handling them and I don't think even really notice anymore!
The trick to being a good handler is to listen to your musher and follow their instructions. EVery musher has quirks and their own methods of doing things - you need to be attentive to and respect that.
Don't know much at all about the mini Sibes or Klee Kais, as I believe they are called. I actually think they are more of a mini Alaskan Husky then a Siberian. I would expect them to have more of a small dog personality then a typical Siberian one.
Karen