Yes x1000! Whataburger>In-N-Out (and TX>CA in general)
This is my thinking... another step toward the Californication of CO. I've had it, it's Meh at best, and think we've managed just fine without I-N-O the last however many decades. Granted, it's been at least 14 years since I've had it (and since I've been to Commiefornia), so I'd be willing to give it a try again, but I'm not hopeful.
The only problem I see- you'll have to wait forever due to popularity... If you think Chick-fil-a is bad you have no idea how long the lines will be at In-N-Out- and I'm not just talking the first few months. The Chick-fil-a in Brighton ALWAYS has a huge line at Lunch time.