safe than sorry. One never knows what is going to happen to that T/R G-box -- still got oil, coming apart internally, vibration present, etc.
Sounds not wise but it definitely is when you consider if you get it wrong and people get hurt you'll be in court defending your decision. Don't go there, better to have a sit in a field or wherever.
Brings to mind clothing and alternate arrangements as required. Summer, winter, rain, snow, environmental factors and so on.