Poeia makes a good point ... true PG-free is hard to come by. Sorry I don't have too much insight into this, because PG doesn't bother me, so I don't pay much attention to it, but many flavorings are PG-based even if the resulting mix is called "100% VG" (other than the flavor).
So I guess the question is, why are you concerend about PG? I agree with your take on JC ... I love their stuff, and I get some some of their "Original" line as well as some of the "Red Oak" (VG) line. It just depends on how much I like it.