RE: Covering the Somthin Extra ?
I really don't see what the difference is as long as you are not gluing covering to wood. As long as you ensure wood to wood gluing, there is no difference. Even ARFs instruct you to remove covering without cutting the wood underneath before gluing and installing the hor. and vert. stab.
After reading some flight reports, the flying wires are a must! Plus it looks like a large scale model with them.
Jason