Haven't checked on the pro controller yet, I expect my problems to be somewhat better on there, but not perfect.
That said, the battle system is absolute horseshit with the joycons. If you use the arrows holding zl to move freely in battle feels uncomfortable. If you use the stick to move you'll accidentally jump way too often. The attack-recovery timer is slightly too high, so you can't actually "get good" at the battle system, which I think is important to any action-based/live battle system. Its fine for me to grind it out so defending becomes unimportant, but I'm sure it will make others lose patience with the game.
Controlling outside of battle is far superior with the normal controls, but in-battle you'll want to use the arrows to avoid jumping into damage by accident.
Cheers, looks like I might hold fire on this one then I reckon. There’s so many jrpg’s on the switch now it’s so hard to know which one to pick