Any other dual nationalities people? 
I usually travel to Ibiza on my Canadian passport.. and hire a car with my Canadian driver's license.
Sometimes I travel on my British passport, but am wondering if, when I hire a car, I hand in my Canadian driver's license, but my British passport, that would be a problem?
I never thought it would be, but had a friend who just recently came back from holidays in France and Spain ( she was traveling on a European passport) and showing her Canadian license.
I can't imagine it being a problem..but can't remember if in previous years, what passport I traveled with....maybe things have changed too?

I usually travel to Ibiza on my Canadian passport.. and hire a car with my Canadian driver's license.
Sometimes I travel on my British passport, but am wondering if, when I hire a car, I hand in my Canadian driver's license, but my British passport, that would be a problem?
I never thought it would be, but had a friend who just recently came back from holidays in France and Spain ( she was traveling on a European passport) and showing her Canadian license.
I can't imagine it being a problem..but can't remember if in previous years, what passport I traveled with....maybe things have changed too?