... and 36 shots/dive (or dive-day if one is squeamish about opening the camera in-the-field)
Given I almost never finish a roll on a dive, no problem.
Given that the RS is much less fiddly about being opened than a housing, no problem.
And I forgot: highly accurate TTL flash.
Now, don't get me wrong: I really recommend people starting out go digital. The instant
feed back will make you a better photographer quicker.