There's the traditional crunchy taco in a hard corn shell, and there's the soft taco, which is wrapped up completely in a big, fluffy flour tortilla. (familyfreshmeals.com)
If you want crispy tacos, replace the soft flour tortillas with crunchy corn shells. (topsecretrecipes.com)
And ST I would totally use corn shells so much better than wheat flour, more flavour and then yes gluten free. (cookincanuck.com)