There is this AMA - answering is the Nick Hansen, Luxor CEO.
Q: "If there is a chain split after block 961632, how do you think about which tip to mine on?"
A: "We'll stay on whichever tip is paying the most, which will almost assuredly not be LukeChain"
Simple as that :D based

Stacker News
I'm Nick Hansen, CEO of Luxor - AMA! \ stacker news
We started in 2017 as a mining pool and never stopped bolting things on. LuxOS firmware. An ASIC brokerage desk. Hashrate derivatives. Fleet manage...