Maybe we should define "official!" It appears that there are two kinds of "official." The first would be a promotional situation, i.e. Benchmade or Cold Steel get to use the Gunsite name in advertising or on their knives for some monetary compensation. I don't know who would pay who since both are advantaged.
-OR-
Gunsite wants to select a knife of choice to sell in it's gift shop and recommend patrons buy because the instructor is going to use one. In other words, "Class, this is my knife and if you want the best knife for the job, bring one of these to class. Because if you don't you will be handicapped by your choice of weapons!"
I think I can make a case for the first definition. As I stated before, BM used the Gunsite logo in it's print advertisements for the AFCK and Greg Mooney of BM sent me this response to my inquiry about the issue,
"Dear Mr. Woodbury:
The official Gunsite knife is as much a promotional label as a functional label. We were the official Gunsite knife until Cold Steel started working closely with Gunsite.
The Gunsite people feel that the Cold Steel knife is better for their use at this time. Maybe down the road, Benchmade will have another knife that meets their needs."
I'm not sure anyone has made a case for definition #2 because no one has approached Gunsite and asked what their senior edged weapons instructor uses and recommends. And Arnistador indicated he doubted the instructor taught with a Cold Steel.
So was the AFCK an "official" Gunsite knife? Yes it was, BM says so, or Gunsite may have been able to sue BM for illegally using it's logo. Did Gunsite ever teach using the AFCK? We don't know that they did or didn't, and we don't know if they teach using the CS Gunsite knife today.
I can't even say the AFCK was the first Gunsite knife since we don't know if they endorsed one before mid 1995.
ti, maybe you could reveal the name of the BM person who gave you their answer, and you could call them back and ask them if they know Greg Mooney at BM. I bet the person you talked gave his response based on definition #2.