Interesting. But this most recent research studied.... pizza. Pizza absolutely kills my BG so I'm in agreement with the study. I really love full English breakfast with lots of protein and I am able to control it without any BG spike by insulin dosing for the protein. It's tricky to get it right as dosing for protein is an inexact science. This research would have some bearing on that since ultimately the protein is converted to carbs, and the carbs would then be affected by the insulin resistance effect that the article describes, caused by the fat.
Anyway when I dose for the protein in a full English (no toast obviously) I get a nice flat blood sugar profile.