I have a set from FT actually. I was surprised they got through, but I took a gamble knowing what HK customs have been doing.
I got the PFs though, different chemistry, "safer" chemistry at that.
These things blow my aw 2k mah batt out the water. While the 1.6k mah aw has a 15amp limit, and though tests still need to be done to figure out the burst limit for subohmers (im guessing 18amp burst) the mah rating of 2900 makes up for it's one weakness. Im fine with my .8 ohm going half the day strong. Good thing it came in a two pack....
They hold voltage under load better then the similar aw's (aka bigger amp rating), they have a bigger mah rating, and are actually smaller in diametwr then the aw 2k mah (my aw does not fit in the zmax 1.1 version)
Also ordered the sony 30 amps on impulse in the same order... its your gamble to order from FT, I got mine within 3 weeks, two wk min. Anyways, these PFs; they certainly arent fakes, and out preform most if not all batteries that have the same/similar amp/mah. Going two weeks strong atm.
I guess good luck if your ordering from FT lol