I know at least one reason why this may be an issue. Someone asked me about reserve in ANC if you lived in domicile. Since I don't do it, I checked the bottom 15-20 folks on reserve for May just to see if they were getting used.
Quite a few had chopped up their reserve schedule into multiple 2 and 3 day blocks after starting with two large blocks. Obviously, they weren't getting a lot of action since the shorter trips aren't that plentiful in ANC.
Can't blame them for working the system if the 'puter lets them. I think someone's on to them now, though.