The problem I see "not withstanding nerve damage" is that you already said you feel the pain and begin to fall apart.
That would indercate you need to practice extended sessions with a glove or tab,,,not to mention "pain" is a message that you really shouldn't ignore.
So you practice with finger protection and then go hunting without it,,,,,DOH!!!
I think it's a total waste of effort to practice something but not use it when you need it most.
Add that to the "FACT" we can adapt to darn near anything we want to,,,,and finger nerve damage is a very real issue,,,,why go through all the BS just to prove your not up to a task 99% of other humans can achieve with far less effort than it takes to piss about avoiding it.
This is starting to sound like the old work place thing where I guy will spend an hour working out how to avoid something that takes less than an hour an then wonders why nobody wants him there.