Perhaps, but if they're truly active, they're buying at least 10 kits a year I would think.
There's been no marketing effort (that I've seen) to get those "Christmas Penmakers" using something other than slimlines. To them, an upgrade is to the Euro with it's "challenging" tenon. If they realized that not only are higher end kits MUCH more attractive, but actually EASIER than even the slimline, I think we'd see more demand for the better kits.
I wonder what CSUSA and PSI would do if they started selling 10,000 Jr's a year...