Yep, Eric (Normark) is the man for kydex. His work justifies the high recommendations he receives here on the forums. He makes a hi-ride sheath that goes RH, LH, IWB, Vert, Hor, 45 degree cant, etc. with J-hook to get it on/off without unhooking your belt. He works hard with customers on customizations & mods to fill the need of the user. Great work at reasonable prices.
If you demand a Tek-Lock on your sheath, you could look into the work of Buy Brown Holsters. He posts to the Busse forum occasionally & has a link to his site in his sig.
For cordura, SOE (IIRC they make Strider sheaths) will make a custom kydex-lined-cordura-shell carry for you. They are expensive.