Can someone live and walk around with a blood pressure of 180/100 - 195/110 for years on end?

Yes. That is why hypertension has been called the silent killer. It can produce symptoms such as headache or shortness of breath but commonly the patient feels well. The first problem could be a heart attack or stroke. That is why it is important to diagnose and treat the problem before the damage is done.
Possible but... Although it is possible it's not very likely and i wouldn't count on it.