The following is a quote from the latest IDPA rulebook:
"D. Must carry the firearm in a neutral (vertical) or muzzle rear
cant, but have no adjustable cant backpieces.
Holster cant that
is adjustable by removing bolts and repositioning the backpiece
is allowed. Exception: IWB style holsters do not have to meet
this particular criterion."
The entire rulebook can be downloaded here:
http://www.idpa.com/rulebook/IDPARuleBook2005.pdf
As I understand it, based on Blade-Tech's description of the TEK-LOK
system, your holster should be legal.
Now the "light visible through the belt tunnel" issue is a whole 'nother matter......
:roll: