I really haven't found it very difficult so far, I suppose that could very well change as I progress, but aside from a couple of KO's, I haven't had too much trouble.
I think the gambit system works pretty well, though there are some gambits I could think of that aren't available...but I have plenty more yet to obtain. Plus, since you can turn them off or supercede them by inputting your own commands, it has a nice balance between old and new school.
My main problem is running in circles through areas chaining for items with high re-sell. After a couple of hours of that, my money is spent in one trip to the shops after buying everything I want before proceeding. Also, I'm hoping that monsters will start giving up more LP, as the licensing is starting to progress more slowly. (SPOILER)(even with the golden bracelet, or whatever it's called, that gives you double the LP.)