They're mostly phase 1 on 700 as well..... Tacoma area is mixed phase 1 and 2....
I can tell you that while the goal may have been multicast, there are plenty of times where audio is not relayed to one site or another, I've had multiple receivers going, both tracking the trunked systems. and conventional, and I'll see/hear a call on 700 that's not multicast to VHF, or a call on VHF that makes its way to 700 but not IWN...and every combination of the 3....