Let me ask you this...what's a heavy lifting SWO job? ATG? SWOS? PEP (nope)? NPS (NOB FITREPs-throw a BS flag on that)? Why is it that only the good deal tours, which can have nothing to do with the SWO community or the Navy, require committing to DH? Last time I saw 1110 O-4 selection rates this high, guys that did nothing operationally relevant and were subpar DHs were getting picked up.
Easy, the yellow brick road for a career SWO couldn't be easier. 1) to make O4, get your ass to a ship as a DH. 2) to screen for command, do very well as a DH. Period. You can further extrapolate that to figure out what the "smart" jobs are for divo shore duty; something that will benefit you in that DH ride. Depends on what DH job you take, but CSCS, ATRC, TTG, ATG, and about a dozen commands would set up a prospective DH pretty well. For post DH shore duty, of course, PERS and N96 folks screen head and shoulders above everyone else, but then again, you can't get those orders without very strong paper as a DH (see rule #2).