I'm with Pete, definitely an Adventure Trailers product, just can't back it up with any proof. I think the sweet Comanche is the tell tale sign.
It is and it unluckily never went into production. Adventure Trailer had to set priorities on what of the cool designs they will bring to production and the Oasis got axed in the favor of their teardrop. The Oasis prototype was actually sold at a really killer price not too long ago.I believe that's the Oasis from Adventure Trailers. I'm not sure if they ever put this into production.