Now that I've had a few trips with my new Suma mirrors, I really like them. My driver's side blind spot is completely gone. As a car passes, it is visible in my mirror as it becomes visible in the corner of my eye - literally zero blind spot. This is with the mirror still seeing the edge of my car. This is so much more natural for me as compared to my little stuck-on blind spot mirror.
I was a little concerned about making a lane change with a car too close due to the wide angle. I turned on my rear camera when driving to see how the perceived distance of cars related to reality. The good news is that because of the shape of the MY rear window, cars were already much farther away than I realized. Even with the driver's mirror making cars appear farther away than they are, the distance I'd naturally use for a lane change still looks about right in the mirror.