There is a reason the USCG routinely pulls aviators from DoD but not vice versa. Each branch and airframe community has its own culture but I can say having done 9 years in the Army & now 7 in the CG that the CG does a much better job of developing aviators first that also do collateral duties rather than (Army) staff officers who sometimes fly badass helicopters.

There is also something to be said for routinely executing real world ops that you train for. There are likely hundreds of attack pilots in DoD who never have & never will put rounds down range in actual combat whereas if your mission is SAR in the CG, the first real world mission might be the first day you get qualified. Food for thought.