Just turn the fan off inbetween hits
I didn't even think of that. Wouldn't be a problem for me though. I absolutely hate fan assisted whip hits. I like total control of my draws.

I have used my fan and switches on my volcano daily for 6 years
That's probably where the extra $240 for the 'cano comes in. The Extreme is not nearly as reliable as the S&B vape. I don't have any idea of the percentage, but there have many Extremes that have crapped out for one reason or another, and the digital circuitry is a big culprit. The fan, being a simple mechanical device should be more reliable, and I don't recall anyone saying their fan has failed. But then if the controller dies, doesn't matter if the fan works or not. I do believe that Arizer intends to be very reasonable on the price of repairs after the warranty expires. Won't cost you $250 for a controller repair like with a Vapezilla.