Well.... i heard many type 1 diabetics do get PIP. If you suffer from regular hypos, they can come on at any time. If you have a hypo, you cant sit, stand, talk...walk. You cant have a person caring for you at all times. PIP is not means tested. You do not need to be a person who needs to be showered, bathed or cooked for. You can still have mobility. The application would purely go on when you have a hypo and how the hypo affects you after. Some people feel the effects of a hypo for a fairly long period after. A hypo tends to affect your blood sugar levels for many hours after leaving a person really exhausted. I read an article and the application is based upon how you complete their questionairre and what your dr writes in your report.
If you have any complications, list them. State how they affect your daily life...sight problems, neuropathy pain etc
If people with HIV who live perfectly normal healthy lives get PIP, then i dont see why a type 1 could not apply and get it!!!
Good luck with your application