I don't know anything about Lhasas, except that they are pretty!
Sorry.
However, my daughter just had a baby and she is at my house all the time with the baby. It's the first baby Kalina or Matty have met and I have to say they both just love him. They are wonderful with him. I have to keep them from kissing his feet and getting up close to lie near him and sniff him. They love the way he smells.
Good luck with whatever you decide.