In a similar discussion not specific to Escape, I recall someone asking how two people could live full-time in a 13-foot trailer. The best answer was to live out of the trailer, using it as a place to sleep, cook, whatever... but spending most of the time out doing things. That made sense to me.
Since Escape Trailer Industries started with the 17-foot model, and has built relatively few of the smaller models (13' and 15') but an ever-increasing range of larger models, I expect that it will be hard to find anyone living full-time in the little ones.
We have only used larger RVs for extended living; our 17' trailer has only been for trips of a week or so. That doesn't mean it isn't practical, just that I can't add any report of personal experience in that size.