I tried to use the orange suit on "Boldly They Rode" and I could not leave the airlock until I equiped the original one.
(Klingon Alien character...I know the suits work differently for Klingon faction characters)
Itís not currently possible to complete the Exit the Airlock objective in Boldly They Rode using the new EV Suits.
The EV suit picked up during the mission will still work for this phase.
The new EV suits will still provide protection from Outer Space.