Try putting one in the softshell (or just throw a handful of corn chips in). It gives it a nice crunch and you don't have to worry about it breaking on you.i'm not into crunchy taco shells, because they break apart so easily while eating them.
I don't like rice in tacos or burritos. It just doesn't have the right texture. Which means I didn't like Chipotle the one time I tried it. But I heard you can order no rice, double beans or veggies, so I think I'll try that next time.