I absolutely agree with you on this one CombatPigg regaring the thread being hijacked and steared away from the original point. I apologize for my part in that. I'm not sure where you're getting the scale thing though. I haven't ever put flaperons on anything but a sport model.
Here are a couple links from my site that might be helpful for those who want to install flaperons.
The first has a section describing how they actually affected the flight characteristics of the plane and some things to look out for.
http://www.airfieldmodels.com/galler...k_30/index.htm
The second shows a way to mount the servos outboard in the wing. I think in this case it would be easiest to just mount them side by side as I believe has already been suggested, but this method will provide a stiffer control setup.
http://www.airfieldmodels.com/inform...ruction/07.htm