I haven't tried the Dependeco diapers myself, but have heard a few people report that the outsides get slightly moist after use. I've wondered--but keep forgetting to ask--whether those people have the regular PUL, or cotton/flannel-covered PUL. Because, in my experience, plain old PUL doesn't sweat much. On the other hand, it's easy to imagine how a cotton or flannel layer over the PUL could wick moisture from the leg cuffs to the rest of the exterior. We used AIOs (among many other cloth diapers) with our kids when they were babies, and never were the PUL exteriors of the diapers damp unless there had been a major leak.
So, if I was doing the shopping, I'd probably stuck with the plain PUL. Putting an absorbent material over the PUL--on the outside of the diaper--has always seemed to me to be a rather strange and problematic design choice.