I have Celiac and eat here on a regular basis. I've had several different burgers on lettuce cups and always get the fries. I've never had an issue. I'm not a big fan of fries but these fried in duck fat are awesome. If anything was omitted from a burger to accommodate gf, I suggest you double check before eating. I had them get that wrong once.
Celiacs and other true allergies: Do NOT eat here! Had the exact same experience with a bun contaminating a burger. Suffered for the next 2 days. Decided months later to give it one more shot because the manager seemed genuinely sorry. Today, I asked for no bun altogether. I also ordered fries in their 'dedicated' frier. The waitress returned and informed me another patron had asked to have their onion rings fried in the the gluten free frier. What?! The dedicated frier is routinely converted to accommodate non-GF items. WARNING: if you have an actual allergy or unpleasant intolerance, stay far away.
I went here a couple of months ago with excitement about the bun and they didn't have any.. Lettuce it was :( BUT I tried again and sure enough they got gf buns in. I brought the original burger home for takeout and thought before I ate it " that bun looks too good to be true" I took a bite. It tasted too good to be true...Then I frantically checked for photos online to compare to mine to make sure I could safely scarf down this amazing burger. Sure enough they made no mistake. The gf buns are simply that good. And I guess the actual burger itself makes it that much more delicious :) definitely recommend! Fries were delish as well.