It's an option, but according to the manufacturers, not a very good one. And one that I can say with certainty, isn't a good one either. The goal of drywall primer is not to 'hide' anything, but to equalize the absorption rates (seal) of the drywall and gypsum mud, and to prepare the surface for the final coats of paint.
Ordinary finish paint is not made to do that, as it is made to primarily to cover and 'finish' the wall surface, not seal it. That's why, when you try to prime with average finish paint, it tends to get sucked into the drywall leaving areas of the wall looking spotty and uneven. I recommend using a drywall primer - or a high quality multi-purpose latex primer - for when priming drywall is your next step.
Another acceptable (in my mind) primer could be flat latex ceiling paint, as this is very close to being a primer anyway, in terms of what the actual paint is made of. Sand The Wall After Priming You'll notice that as after the primer dries, you can feel the surface ... more.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.