Were the studies related to Type 1 or Type 2? Unfortunately there are not a lot (or any) studies relating to well-controlled Type 1's.
I tried Lisinopril for a while just to make my endo happy. I was cutting the smallest pill in half and still seeing blood pressures of 70/45. I was getting dizzy every time I leaned over. Then I got the cough followed by plugged sinuses. With my endo's blessing, I ended that experiment. I've had Type 1 for 36 years with no measurable kidney damage. If I get high blood pressure, I'll happily go on another class of blood pressure meds. Until then I'll do my best to keep my blood sugars in as good a range as I can manage.
The decision to take "preventative" meds is something that you along with your doctor's advice need to consider. My decision is not to take them, but many people take them and are happy with their decision.
Let us know what you decide.