It seems the discussion on the full feathering prop and non full feathering prop vs drag has kind of missed the whole point behind the full feathering prop.  The full feathering prop will go to full feather when you lose all oil pressure, and the standard prop will go to minimum pitch (high drag) configuration with the lose of oil pressure.  The Prop governors work opposite and are not interchangeable.  The best of both worlds is the "counter weighted" prop.  This prop goes to full coarse pitch with the loss of oil pressure and uses the same gov. at the full feathering prop.  I have the 4 blade MT Prop counter weighted and I know Brent Regan and Bob Pastusek have them as well as others, but I'd bet most of the folks out there didn't even know they existed. 
I will be very interested to see how the full reversing prop works that Ronald just ordered.  I'm sure you can go full feather as well as reverse and even if it takes a few seconds to get to reverse, in most cases this would be enough time say in case there was ice on the runway.  It's always very handy to back up from time to time too.  The weight of the reversing prop will be quite a bit lighter than the full feather metal prop though, so there might be some W&B issues in a IVP. 

Ron