Type 1's are or should be just as concerned if not more so with carbs than type 2's as it dramtically affects the type and doseage of their insulin. If anything can slow the absorbtion of carbs thus mitigating a spike, this will have a huge impact on what type of insulin a type 1 has to take and how much.
So the round about answer to Jeannie's question is "YES", it is a helpful product for type 1's
Warren