There are serious limitations regarding APCO-25, and ICOM's 2500 series communications receivers. It's my understanding that the P25 module does not work in bands below 700MHz. Added to that, the U.S. version doesn't even cover all of the 800MHz band used for public safety! ICOM claims they "accidentally" blocked out frequencies below, and above the U.S. cellular band. There are numerous other chunks of the spectrum missing from this radio, including portions of MilAir.
It's too bad, it looked like it had potential.