I know a guy who was hired at a heavy squadron, performed well in T6s (2.1 syllabus) and ended up going 38s because a fighter unit student washed out of UPT, and they needed to fill the slot. He was top stick and a good dude and after an interview they hired him. Took some coordination between his flight commander, the fighter squadron, and his heavy squadron. Definitley a one off case rather than the norm. Lots of luck and timing. However, if you are looking to get hired by a heavy squadron just to use it as a path to UPT then jump ship to a fighter squadron, not a bro move.