I rode a bmx for 20+ years with my brakes euro. Had a few years away from cycling but returned with my first mtb that had brakes the wrong way round. Must have been the break but i had no issue adapting. Fast forward ten years and i order a set of brakes that arrive euro. I thought it’d be piss easy to revert to my old ways of braking so didn’t swap them over. First ride was interesting (wet dh). More crashes in one run than the last few years combined. Nothing too dramatic – a few otbs and a lot of accidental front dabs at inconvenient times with predictable results. I’m used to it now mind, three months later. The only way to know if you’ll adapt quickly is to try it out.