It may sound foreign or odd but I doubt there'd be a problem. But in honesty, I have no idea. When I speak French, I really have no feeling for what I'm saying. Likewise when I hear it, I don't intuitively respond. I'm not fluent by any stretch of the imagination and, to be honest, I really speak English with French words (give or take).
My French teacher told us not to worry about mistakes and the like as most French speakers make them too! And I mean so-called basic mistakes; getting the gender wrong (le/la) or getting verb conjugations wrong (I is, I telled him, etc etc etc). Or not knowing the correct verb or it's conjugation so using 'faire' for just about everything (useful verb is 'faire', it means to make or do but pretty much any noun can be 'faire'd! Don't know the conjugations for the verb 'to clean'? then simply 'faire' the adjective/noun, e.g. 'I clean the car' = 'I make clean the car' . ).
Sure, some folk speak an educated and, some would say, flawless French but I get the impression that your average French person is just as likely to butcher the rules as any foreigner might... just perhaps more confidently!