Trying to apply logic, I think the bevel on a right-handed knife would be on the right side. That is, if you are holding the knife in your right hand and pointing it away from you, the bevel is on the right.
My logic is that, as you slice an item placed horizontally on a cutting board starting at the right and slicing to the left, the bevel on the right would cause the slices to fall away from the face of the knife rather than stick to it.
But that's just a guess.
"If you want to make an apple pie from scratch, you must first create the universe." -Carl Sagan