[imarg]

Adding another datapoint, as a non-native speaker myself, I believe I've rarely (if ever) mixed them up.

As the parent commenter said, I've also noticed in the past that this mix up occurs usually among native English speakers. I've noticed it with other languages too, that native speakers often mix up homophones, probably because as a native speaker you write as you would speak and either you don't care or don't even think about it.