If this forum was to disallow any social interaction, it definitely would die a slow death.
Over the years having met literally hundreds of the folks here in person, and becoming what I consider friends with some of them, it is great to put these personalities into context, and interact on this site as though we were in person.
This is a community, not a technical school, and as such it carries all the characteristics of a community, not much different than the ones we live within our lives outside the internet. Whether here, at the kitchen table, or around a campfire, we are there to help people, that is basic human nature for most people. BUT, we are also socially motivated too, and as such like to interact in a friendly manner. Just as at the tableside or fireside discussions often carry good learning content, they also drift off to other topics with humour injected as well.
I can see that maybe some of the lighter stuff would maybe migrate to Facebook, but it would (hopefully) never leave this site too. This is how I believe that a Facebook page would be somewhat beneficial, it would only increase the social aspect of discussions from folks owning Escape trailers. As is, there is already a lot of discussion amongst members via email and PM that are not part of this site, Facebook would be just another discussion venue.
I belong to one Facebook page, which is actually a closed one, that has about 100 members who all met through a Canon photography forum, of which I have met half in person. The thing with that page is that we have all become really good friends over the last 12 years, and discuss way more personal topics than most folks would be comfortable with on the web. All the other pages I belong to, though light and social, do lack the same close personal flavour. I say this, as an Escape page would fit this latter category, and I am not sure that there would be a heck of a lot more 'off topic' discussion taken there, than occurs here.
I do believe that there would not be anything taken away from this site with a Facebook page running in parallel with it. Heck, it might not even take off to much of a degree at all, but only time would tell.
As far as finding things searching here, I have had little trouble, either using a Google search, or the forum search. I too use the latter if I know which member was specifically involved in the discussion.