That guy is on Facebook, he does a lot of Russian olive live edge tables and slabs, they are amazing.
Our property has an abundance of autumn olive which is in the same genus. I have been burning some that was cut, split and stacked two years ago and it does well mixed in with some other hardwoods. I personally would not go out of my way for olive but if you have it already burn away!
Yea i will have to just try it. I was at the wood pile today and noticed its turning green like i had it pressure treated!!