That was not my point at all. I know some people have a naturally higher carb tolerance, and that you can mess with your "carb debt" through exercise and "survive" a mild glucose spike with no consequences.

My point was that if you have a meal that causes a high enough glucose spike for the resulting insulin to shut down ketogenesis, it won't matter how many carbs you had over the rest of the day. You're going to be out of ketosis for a couple hours at least. Of course, carb type matters, as we all know. Some carbs spike it harder than others.

If you don't believe me, grab a ketometer and some simple carbs, and find out yourself. If you're still above 1mMol ketones 3 hours after having those carbs, you have one mighty metabolism, sir.