I used my TLT6 liners for (I think) two tours before putting a Pro-tour in.
Got my XTDs out for a short tour and was impressed by the stiffness, having come from a boot with the flex-resistance of a cooked egg noodle. I didn't even bother with the stock liner, I put the liners from my first-year Freedom SL in it. Kind of a protour/luxury hybrid. Fit well for my skinny ankle/wide forefoot.