The BladeForums.com 2024 Traditional Knife is available! Price is $250 ea (shipped within CONUS).
Order here: https://www.bladeforums.com/help/2024-traditional/
A stud in the sheath is used to unlock the blade for sliding it shut and for sliding it open. Its not terribly easy to explain, thus:
Old style clip, new sheath offers better protection
http://www.youtube.com/watch?v=H7LGxVzrGCc&feature=related
http://www.youtube.com/watch?v=Nuo2CEyLtBk&feature=related
AUS-6 is the blade steel on the Chubby.