First off, I want to thank VegGuide.org for directing me to the Duluth Grill!!
When we arrived, we were convinced we had the wrong place; in fact we almost left the parking lot (it didn't help that googlemaps was telling us it was a bit more up the road). My girlfriend said "are you sure? this place looks like a Shoney's," but after double checking, we were eager to go inside. Looking back, the unassuming atmosphere is part of its charm and helps to expose many new faces to sustainable/organic/veg eating. It's also RIGHT off the freeway, making it a convenient place to stop if you are just passing though.
We ordered the garbanzo omelet that has been raved about on this site. It was pretty good, with heaping plops of guacamole and salsa on top. It also came with a delicious bed of sauteed kale. Our server asked if we wanted the omelet with fruit, mentioning that it usually came with fruit, so we said ok. Then we discovered we were charged for the fruit (but that was actually included with the menu price. So if you only want an omelet and want to save a dollar, reject the fruit). That said, the fruit was fresh and delicious. We also got the lettuce wrap appetizer, made with bibb lettuce, roasted red peppers, avocado, and curried polenta cubes, served with cilantro lime vinaigrette. They were fantastic, but far from wrapped, so basically be prepared to eat a bibb leaf salad. I'm not 100% sure, but I believe both entrees were also gluten-free if you care about that. We were asked by at least 5 different people, including the cook, how we were enjoying our meal, so they obviously care about your experience. We got all that for about $20 and had plenty left over for our breakfast, so it was a pretty good deal.
We went back the next day and tried the huevos rancheros prepared vegan. I was a little disappointed to see that the vegan version didn't have any substitute for the cheese or eggs (I was expecting more given the fact that they make a vegan omelet). So the "huevos" was just beans, veggies and tortilla chips atop a bed of hash browns; a classic and unfortunate case of what I call the "vegan tax," but we did seem to get a lot of extra salsa and guacamole, so perhaps that is how they made up for it.
Overall, we obviously were happy enough to go back, and still have every intention of going back next time we are up that way to try the vegan sorbet which both times we were too stuffed to sample.