Overall, from what I've tried, it's a nice project. It's a bit unfair to compare, but it lacks a things I'd need to switch from DataGrip. I hope this doesn't sound too harsh:
The optimiser itself is AI. Which I don't like, rewrites could be proved from the catalog (an unused unique LEFT JOIN, DISTINCT over a key, NOT IN to NOT EXISTS, OR to UNION). A model can suggest a rewrite, but it can't guarantee the result set is the same.
Also vim mode is editor only, for me its important to have the whole app keyboard native
The formatter is basic compared with DataGrip's code-style settings
DataGrip can step through PL/pgSQL and Oracle PL/SQL code. As far as I can tell TablePro has nothing similar, and in my work that's a blocker.