I use cloth hinges, gluing them without gaps, sometimes with white glue, aliphatic resin glue, or Sigment/Ambroid types. I silkspan over the hinges with good results. I silkspan the wing before inserting it. Sanding afterwards can make the hinges almost invisible. I sometimes place the stabilizer/elevator hinges under 1/16" sheet on the stab, with the sheeting tapering down to the hinge line ahead of the elevator, which is not sheeted. So in these applications, the forward half of the hinge is not visible at all. It's a matter of preference, but I don't see any advantage to hinging over your covering. Cloth hinges work pretty well, and as Floyd says, they can make taping the gaps unnecessary.