I got rushed this morning and forgot to strop before I started, and noticed immediately that something was off. It probably depends some on the blade whether or not you could skip a day; I was using a Boker extra-hollow which is normally my best 1-pass shaver but is also the thinnest ground blade I have. A heavier blade might hold up a little better through a shave and be more usable for a second day, though.

Ended up having to pause for stropping after finishing one cheek. Normally, I save a bit of time by stopping after I lather since I'm giving the oil/soap a bit of time to soften things up as much as possible and might as well put that time to some use.