Deerndingo,
If you are ok with only ONE bullet supplier go for it. Not much selection for barrels but then again thats the draw for some wanting esoteric goodies. Im the same way with wood. The more obscure the better. I have never shot a 19 cal but can only think that it would be just as good as any well built 17 or 20 caliber. The British had the 4.85 experimental with heavy bullets but thats a different animal due to bullet weight. I have some in my collection and they look like real go getters
Corbin