Doing keto for a T1 diabetic is hard and it doesn't change that much. Sure, you don't use as much insulin but there's also no effective way of getting your glucose level up without going out of ketosis. There's also the ketoacidosis problem, which is even harder to avoid while being on keto and being a T1 diabetic.
It's a great diet for T2. And I would dare to say that paleo is even better, you keto guys (going by what I see on /r/keto) need to eat more vegetables.
