This place is not gluten free, despite their prominent and deceptive claims to the contrary. When you get there you'll find a fine print notice on the menu stating that the food is made with "shared equipment, utensils, and fryer oil". So, everything. Reviews I've seen also consistently report that at least some of the staff are either incompetent or uncaring. The kicker is that the restaurant has been definitely aware of these issues for nearly a decade and done nothing to resolve them. My advice is to stay far, far away, and not to give this place your business.
I'm vegan and also have a gluten sensitivity, and this place was a dream come true. There's a dedicated gf menu, but they don't have dedicated fryers (which my server made sure I was aware of). The gf menu isn't huge, but what is on it is amazing. I had the portobello truffle melt on gf bread and it changed my life. It was so good! The milkshakes are awesome too. It's kind of pricey so I can't go as often as I like, but this is my new vegan/gf haven.
My son is gluten intolerant, not celiac, so I can't gague cross contamination. We really loved the food, and the place is not so granola as it used to be...they have gone more international and upscale with their food. The place is still teeny inside, kind of crowded in a Chicago way. They have a dedicated GF menu, which specifically tells you that they don't have a GF fryer (so avoid the chips and fries). Staff well educated and very accomadating. We'll be back!