Just FYI, Cypress Creek EMS (near Houston) is in the process of switching to UHF narrowband. I haven't found the licenses yet, but I know the radios are being reprogrammed.
Over and done with. No changes to the published frequencies or usage. Cy-Fair has completed narrowbanding too. Don't know what the status on ESD1 is, but Fire 6 (453.625) sounds just as loud and wideband as ever.