@WhiteApe @QuisSicutDeus @judgedread :SadisticNagatoro:

The major blood vessels in the human body are mostly buried deep and are not at risk from a recreational flaying. Blood loss induced shock is not a risk as long as the operator stays superficial and doesn't go digging with sharp objects. What can cause shock and loss of vital signs is dehydration, which is why if you are going to remove large amounts of epithelium from a subject you want to start an IV first and run multiple liters of fluid into them while working (assuming you want them to stay conscious). Trauma burn charts can help you calculate the exact amounts of fluid to run in. You can also use temporary bandages or styptic to deal with persistent oozing.

Tl; dr an operator that knows what they are doing can keep the subject awake and vocalizing for several (>6) hours at least