Didn't mean to offend. It's useless to me. As it's far more expensive (in my area) and harder to obtain (in my area)I am assuming thats what it will run in general since thats what we're tuning with, with a full tank it should be good for a few hundred miles of cruising I wouldnt consider that useless at all. For just driving or low boost he could always run pump anyway but to each their own if you can afford to run good gas I dont see why you wouldnt.
I'd imagine he won't be making balls to the walls pulls in it constantly and the need for 100 oct doesn't make sense to me on a regular basis at a much higher cost (in my area)