OP: "...Does anyone have any experience with this?..."
I owned a Pontiac powered dirt car which was dynoed on & ran pump E-85. 755 dyno hp & ran strong & cool on the track.
And I posted links to info about others experiences with E-85. There are some guys on the PY forum who run E-85 in both street and strip Pontiacs.
But for anyone who is interested in using it, I feel that it is good for them to have all the info they'll need in order to use it successfully. So, rather than just saying it's good & lots of guys use it, I feel it is better to provide a little more info. So, if that "morphs" into more info than you wanna read, just don't read it. E-85 ain't for everybody. But, it is good for some combos in some areas of the country.
I could badmouth Holley carbs, because I prefer a Q-jet. But that would be dumb, since there are so many guys who run a Holley, with good success.
Not trying to offend anybody. Just presenting my opinion.