Talking to some of the Herc guys they seem to like it. As with everything they have their gripes but in the grand scheme of things they are pretty trival.
Their duty stations are Kodiak, Honolulu, Sacramento, Elizabeth City, and Clearwater. Deployments vary on duty station but are usually under 2 weeks and typically less than 5 per year.
The biggest complaint is the aging of the H series birds with the wing box limitations now imposed which is limiting their mission flexibility. That and being sent out on an 8 hour SAR/LE case 2 hours before duty relief. That really kills your day off!! Thank God for Sliders though!!! (comp days)
I recently sat on a DCA board for helo guys and there is a set of 5 or 6 questions. They are really straight forward like briefing an approach and wwyd if the crew wanted to go drinking but you aren't supposed to...........
As for looking specifically for Herc guys I think that they are just looking for either fixed or rotary wing aviators. If you get picked up then you submit a dream sheet for which duty stations you want and that will determine your airframe. As always needs of the service come first.