You have a potential for 'sawing' back and forth on that block's anchor rope, redirected over the tree, so a webbing sleeve might be advisable.You just have to bear in mind that the load on the actual rigging point will be almost double due to the installation with a base tie.
Thanks Gary!!"What's time to a hog?" I heard it on a cassette tape in the 90's....a white fellow that mimicked blacks....he was hilarious. Now I cannot find that recording. There are youtube versions of it but they are a different storyline from what the original for me was. If I find it I'll share.