porch ceiling w/ tongue and groove wood

[Adam Drummond]

remodeling an older house, and it has a small covered front porch.  i was going to cover it with vinyl soffit, but i saw some other houses near me that had a stained tongue and groove  porch ceiling .  has anyone ever put engineered (prefinished) wood floors on a ceiling before?  i have left over flooring in my garage, and they are engineered hardwood not laminate.  i thought it would be a cool look, but obviously, moisture could be an issue.  what do you think??  

adam