Sorry to resurrect the thread, but I had to share this little gem for those who are interested:
http://www.kcmo.org/ads.nsf/eb0743e765fb8f8a86256cca005d9e23/e6a54b7172019571862574ff00511148/$FILE/EV0593- Radio RFP- FINAL 081308.pdf
That would be the RFP for KCMO's new P-25 system. If you scroll down to pages 31 and 32 and read sections 3.2.3/3.2.4, it looks like there will be tons of encryption with the new radios. Unless I misread something, it appears they are seriously considering encryption on all PD comms. Bad news for us KC scanner folk if that's the case
EDIT: Couldn't get the link to show, so you'll have to cut and paste the link into your browser if you wish to read the documents. Sorry.