I've played around with telepunting offline....
but I have rarely used it in a game. Hal is right, it is kind of a cheesy tactic. Then again, I think the Redeemer is cheesy. But hey, that's just my opinion.
I've seen people telepunt on Face from the top of one tower to the other. I've telepunted on Lava to the middle cliff. But actually, it's seems easier, to get the boots and do a triple xloc to get up there.
Cryos, just drop the beacon, switch to impact hammer, get right behind it. (you may have to aim down) charge it up, (Hold down the fire button) then just let er rip. It takes a bit of practice, but not really difficult to do.
What I enjoy much more is blasting the enemies beacon, can u say "Telefrag" and they say "WTF"