I'm still frantically trying to keep up with life - haven't written in a week! :( I'm hoping by the end of this one I'll have the time.

It really depends on the canon for me too - if I already have the canon feel in my head, reviewing canon is just a waste of time and can stifle my writing urge. Some canons, otoh, I need to get the tone, canon details, etc. in my head first, and reviewing is the best way to do that.