I think it depends in how Roman and co. View Glenn and Henderson. I think you take the bet lineman, regardless of position, hoping Glenn or Henderson could kick inside (they both have experience at the college level there). But if it's a Guard, take the guard.
Exact quote from Jags brass in 2012 when they selected a Punter two picks before Russel Wilson went to Seattle.
Seriously though, BPA is a great idea in theory but has to match position need to an extent.