I don't drive my TJ in the winter and I just put the standard 87 that has 10%-ish ethanol. I get the fancy stuff for my lawnmower small engine stuff, but for a normal engine I don't think it's a big deal.
Here they put Ethanol in the 91, 93, nut as much but it is there. I did that test on You Tube with that Engineering guy, to determine how much. 4% give or take.
No need to run ethanol free gas in your JK. Now if we're talking about lawn mowers, leaf blowers, and small engines like that, then YES, I would only ever run ethanol free.
Our current Jeeps are driven all the time. But the Vette sits in the garage for months, during the winter. I don't use anything special. Just plain old pump gas.