Hrm...well I could be wrong about the Boa. Although I assumed it was very likely to be a Kershaw product since he's working with them. The night I saw that episode I poked around the Kershaw web site quite a while and the blue Boa sure seemed like a good match.
Here's a quote from Alton's page about blades:
"I admit it, Im a bladeophile--I adore knives. Like my dad and my grand dads before me I carry a pocket knife at all times. But unlike my elders, one knife is not enough for me. I have 10 pocket knives and my favorite three, designed by Hawaiian blade smith Ken Onion, were manufactured by Kershaw in Portland Oregon. Im also in lust with Kershaws new line of Shun kitchen knives, manufactured by the venerable KAI in Japan, which marry the finest elements of European and Asian style cutlery."
vv
J.O.