No, unwieldy weapons cannot be used.
As you have said the become shoot (double) instead of shoot (basic) and RAW don’t work with the Overwatch rule.
Note that suspensors, third arms, and some other warhead may change this back to a shoot (basic) action.
As you have said the become shoot (double) instead of shoot (basic) and RAW don’t work with the Overwatch rule.
Note that suspensors, third arms, and some other warhead may change this back to a shoot (basic) action.