As far as victorinox goes, true. But a bolster is often a scale addition, often of nickel silver in higher end knives and not part of the blade/tang construction. Or a Weld on after the fact. I can show you many stamped knives with a bolster. You're thinking of stamped knives as stamped and edge ground and done. Higher grade knives are often stamped to exterior profile only, then shaped in stock removal processes. Stamped, VG10 San Mai, Bolster $50 US.