His ability to run with power is absolutely his best attribute and has been since he started playing.
In the situation you describe or a desperation 4th down and short, I could see him coming out of the bullpen.
Cam might be a be a lot of things, but he is, by far, the best power-running QB in football history and is still effective.
When his game is evaluated by critics his running is often glossed over, but he ran for almost 600 yards and 55 first downs.
No, Cam isn't Taysom Hill, but he could get some snaps and help the team off the bench.