Yes, the PCR2500 and TPCR can use Edacs in the Dual Mode.
One problem though is that you'll hear the beep, beep... beep tones when a transmission is done since I don't monitor the voice channel in dual mode.
This is on the ToDo list and hope to have this part working before the next release

(Don't have a set date on the release yet!)
naSTI,
Good drawing of the side-by-side rcvr display, but I don't plan on doing the ICom-ish look anytime soon.
I have some ideas on doing something similar to that, in my "Scanner Contruction Set" (TM) which should poke it's head out for the public to see sometime after late summer of 2009, hopefully
Jay