When it comes to thigh holsters the Kydex platform type are much better than the all nylon. I have used a BlackHawk thigh holster for years(All nylon) Im constantly adjusting it, it wants to roll to the back of the thigh a little no matter how tight you get your leg straps. A real pain when it comes to running or entering
/ exiting vehicles. You can run a Kydex plateform with a nylon holster or Kydex holster whichever you prefer.
Remember you want that holster to be just low enough to clear your gear, vest, coat etc. When you see these clowns with them strapped clear down by their knee they are worthless unless your static, there is no way to run or maneuver with a full size handgun flopping all over the place. Make sure which ever model you get has a excellent retention system, especially if your humping through the ruff thick stuff, nothing sucks more than spending part of a hunting day looking for a handgun.