Some of the worst T-38 IPs I saw were 38 grads to heavies back to 38 instructor, that would be unfortunate. They have no pointy nose tactical credibility. And as I write this, I realize they may not have to, if 38 grads are still going heavies. I just know how I looked at them as a student, fair or not, I gravitated to the IPs that did what I wanted to do.