after seeing them building it for months and reading the menu on their national website we were somewhat intrigued. from appearances it reminded me of a similar place in the peoria/glendale area http://www.freddysfrozencustard.com/ which seems to adopt the chicago theme. I found similar offerings at Culvers with the thin steak-burger style stacked burgers, which they call butterburgers, as well as frozen custard served ala DQ blizzard style which were similarly called concrete mixers.
I ordered a double mushroom swiss butterburger with cheese curds and a concrete mixer. I found it interesting that they ask you what condiments you want on every sandwich. I'm so used to just having the blanks penciled in for me that I was like a dear in headlights. The food was pretty good, the burger was juicy and satisfying. the cheese curds were good, I've had better at some bars but not bad for fast food. the custard was good but didn't seem quite on par with some of the other places that offer custard in the area.
all in all, it was a satisfying meal, and I would go back