the WMATA isn't encrypted either, before the ProVoice upgrade came out that was my first listening experience with transit. There are also quite a few even federal agencies that aren't encrypted, and the colleges are usually DMR trunked, some encrypted, some not. I think I might still have a favorites list from DC. Add the surrounding P25 systems into it (Arlington County, etc), and while you'll definitely notice a bit of a drop compared to MA, I was never bored.