I haven’t heard “uniparty” used in a while, but it used to be a buzzword of the drain-the-swamp crowd. My question is are you saying the he D’s or R’s are going to want to go in a different direction?
Probably both, but it really depends on his messaging. People tend to forget his congressional voting record. It's possible that he does a complete 180 degrees from that (as Kamala is currently doing) and that will not be acceptable to the establishment. If it looks and sounds like he is sliding back into his voting habits, he'll probably be fine. If not, there's always Neocon Nikki they can drag back out into the fray.
All that is to say that while his record as governor is well-documented, I can't say for certain how much he will sway from that if (when?) he is running for president. Politicians will say anything, though which is why I don't listen to them. It will be hard to figure exactly what he intends to do should he get elected (just like all the rest.)