I recently ordered the HST in 9mm from Tactical Defense Solutions. Mentioned above. Its great ammunition. The only kind I carry. It doesn't have a significant inrease in recoil over my 115 gr FMJ practice ammo. I trust it with my life.
As for the LE only marking, +1 to all who said its legal, and safe. As I understnad, the reason that Federal marks it that way is to seperate it in the market, and target it to LEO's. The ammuniiton I got from TDS was actually ordered by a LE agency, and then cancelled. I ended up with a screaming deal.
Anyway, good luck with it!