I happened to think of this thread the other day as I was shutting down and so took a photo. It is a bit deceptive for a couple of reasons. This is an RV-6 and my canopy seems to be built a bit lower than most. This was taken with a SLR where the lens is a little more than an inch lower than the viewfinder and yes an inch or so is pretty significant. In reality I can scooch up and tilt my head back and see directly over the nose (unfortunately through the bottom of my bifocals).
I do have my head set very close to the canopy. If it is rough I pull a couple of Gs after takeoff so as to settle lower in the seat to get a bit more clearance.