I talked with the Federal reps at the 2008 Shot Show in Las Vegas. I asked them about this round and what it's place was. We already have JHP for defense and FMJ for practice and the military, so what's up with these?
The answer was this:
The company was receiving requests to alter some JHP rounds to have a more rounded nose (some are quite linear, while others are rounded). They decided that it would be a good idea to make a separate line of Expanding Full-Metal Jackets that would feed like a FMJ, but perform more like a JHP.
I think it's a good idea, but only if you have feed issues with JHPs, if not just get the JHPs. If you DO have feed problems, either get a gunsmith to polish or alter your feed ramp or carry a different gun - JMO.