Interesting Tibetan Dagger- 'Bowie' Knife

[Bai Lang]

http://www.chinesearms.com/chinesearms/001/other/bishou/DSC01104.JPG

Interesting Tibetan blade..

http://www.twcenter.net/forums/showthread.php?t=195404&page=2

From this webpage thread.

Never seen a Tibetan weapon like that before..

Has anyone?