Personally after 7 seven years of doing this I have never used dimming curves. While I can see the potential for use, I do not think the audience will ever notice whether you use them or not. Most of us blink lights to fast for anyone to really notice any dimming mismatch. That's just my opinion, you may have another. I have way to many things to do for my show than to spend time on dimming curves, but to each their own.