The Gemini can run Linux, so potentially more broadly useful - however, if you're running it in Android mode you have to restart it into Linux. The Register said that Libre Office worked okay on the Gemini, but there was a bit of input lag - though they did note that they were using an early model and drivers.
I don't know if you can get the DeX optimised versions of MS Office for the Gemini's Android mode.
If I were to get a Gemini, it would be an accompaniment to my existing smartphone, not a replacement ( so it might likely stay in Linux mode all the time).