I live in Canada. Many guys up here will not run alcohol because of cold weather starting problems. I have a friend that runs it but it requires a squirt every time to get it going. Rons sells a kit that is marketed as just for easy starting.
He suggested the primer system as a way to get a squirt when you don't have a crew member handy. Another member on here told me that he runs on gasoline around the pits to speed warmup using a nitrous plate, then switches to the alcohol.
I am just asking how guys use alcohol fuel as I have never used it and am getting differing info. Perhaps I do not need the primer system, but some have told me that in the cooler months that I will.