I ordered an arepa that definitely had cross-contact. I wouldn't recommend ordering online, since they don't seem to read order notes, although it might be better in person (based on other reviews). I was disappointed since I ate there before I was gluten sensitive, and the food was very tasty! Now I'll stick to Arepera, which is dedicated gluten free.
It took me a lot of time to find good gluten free food around Montreal, but this place was a great find! The arepas and empanadas are all gluten free and so delicious! They are fried and were somewhat greasy, but it was a nice splurge. The corn batter used is good quality and held up well as a sandwich. We ordered online and they gave us the option to mark allergies for gluten.