Switching midstream hadn't occured to me, but that makes perfect sense. The current signs where the interstate peels off and crosses the river do use DC-295 shields as does the entrance from Penn Ave. The entrances from East Capitol St and Benning Rd do not. So your suggestion makes alot of sense.
However, I just want to confirm that when matching the DC-295 sign, we would prefer ultimately to use "DC-295" which would be displayed as "DC-295" or as "state" shield and pronounced "Dee See Two Ninety Five."
Regional Coordinator: Mid-Altantic, US
Verizon, Droid Turbo, Android 4.4.4, Waze 22.214.171.124