It opens and closes at times.Yes. I know a few guys back in the 2000’s who wanted to shift to something bigger and fly the -53’s (and now one who went from the CH-47 to V-22’s). A lot of guys got bored with ass-and-trash flights in the -60 jump over to the rescue wings in the air guard. Some went for the QOL that goes with having a commission in the AF, especially basing opportunities, but all had a college degree. None that I know switched to fixed wing, but I guess it is possible. I also imagine that now the army has lengthened its flight obligation to 10 years it happens a lot less.
I was exploring it to go toward the 22 at a time in my career where I could have gotten the Army to let me go, but the AF was closed to new people so ended up missing the wave to jump on.
I do know 2 Army pilots who went to AF fixed wing but both were guard. One ended up in Hawgs only to lose that ticket to RPAs, and the other went to a tanker squadron. They really didn’t do anything different than the average person rushing, they just had some extra proof on their record.