Always in,
I don't think anyone has to go through those extremes in the photoblogs. I did look a bit like the bottom photo on myefudex.com for the last 5 days of my treatment.
I never got the large areas of thick scabbing though and I believe that was because of the consistent debridement (scrubbing) and perhaps the shaving that took it off in thinner layers but more often.
I think it makes a big difference to keep it moist with Vaseline when you're in the treatment.