I imagine there are. I'm a cold warrior, F-111s on the deck flirting with the number.I'm referring to all the guys who opted for low level ingress, including USN. Lots of guys got clobbered by AAA and the SAMs they were supposedly avoiding. These days, particularly when your local super-MEZ is comprised of double digit SAMs, the low level ingress doesn't buy you anything except limited maneuvering space if you find yourself defending. There are much better ways to skin that cat.
Brett