Sure, the candidate would just have to go to ARSS. I'm also sure the pre-screening process would be "invasive", to ensure the success of the investment.
Getting the reserves to pony up to send a candidate there is the issue. If the reserves need swimmers, they'll fund the candidate to go. That's really the question.
I'd call the HSL-60 AW shop in Mayport to ask. They generally get their folks from the 5 active HSL squads next door.