Almost forgot about my Weaver Tactical 3-9x40! I use it on my hunting rig but would have no hesitation in giving it a bash for HFT if I didn't have the Leup EFR. All in all, I have three HFT suitable scopes that I'll never part with. Premier reticles Leupold 3-9x33EFR, Weaver Tactical 3-9x40 FFP, Nikko Sniper (rear PA) 10x42.
I suspect that the first two would be impossible to replace, the latter getting more difficult with every passing day.