Worst case scenario is that the the mask will drop, nothing else.
I would also suggest consideration of what-ifs and how high the cabin might peak during any descent .. considering that we are looking at typical populations in the cabin and all the potential medical complications which might attend a cabin pressure excursion ?
If you don't have a reasonable option and need to stay high .. fine. If you have options, then consider what your responses might be during court time when you are called to account for your decision making processes by counsel for a passenger who suffers injury and then sues ...