We decided we couldn't have our tree up this year after both the cats had climbed it and knocked it down within a few minutes. So, we made a tree for our wall out of cardboard and they like to lay under it, but otherwise they leave it alone. We miss our tree/ornaments - but the cats are safe this way :) They are best of friends - very glad we adopted the brothers - they keep each other entertained and we have very few behavior issues. They have bonded well with the family (people and dogs) and have added lots of love and fun to our lives.
Happy Holidays!