That means that on the cycle when I'm at work I'll have only about 4 waking hours at home each day. Writing will be minimal; I might not even be able to keep up with reading my F-list. To counter that, the 5 days off out of each 10 will give me plenty of spare writing time, and so my overall productivity might go up.
However to a large extent this is goodbye from me for the next 5 days; apart from doing a birthday post for evilawyer tomorrow, of course, I wouldn't miss that! Can't promise any birthday fic, however.