It is not done, it had not been done, on the best of houses , buildings,
structures, that are still standing after hundreds if not a thousand
years. Take a trip to Europe to visit 1000 year old buildings. In theory
it might sound better. In fact the wood is outside it may do nothing
since rain hits exposed wood, not the backside. Keep your siding caulked
, painted, and it lasts, let the paint peel and it is garbage in 20
years. Now if you still believe it, figure hand paintings cost of a
truck load of wood before it is installed, just that cost would be
thousands. Just because some historical group says so doesnt mean it is
right.