Minself, I am sure the winching kit doesn't cost a lot to purchase and fit, but if you think that the training costs in terms of maintaining a safe and professional capability are cheap then you haven't done much winching.
For complicated decks on a bad night, perhaps, but for what I guess is envisaged here training costs would be very low. After all, the SH force maintain a basic wincing capability with virtually no dedicated training - if you can hold a steady high hover, you can winch, no?