Mike my post was not directed at you so please don't think I was ragging on your choices. From what your saying it seems pretty clear your not a guy that cuts corners with his planes, a LOT of newbies fall prey to this affliction though so most of this discussion is aimed at them.

The matchbox can be used with any brand servo, just like the Smartfly equalizer.

Concerning the geometry being equal I can only say that my Edge(s) are both older production versions(2ns and 3rd production runs) and they have the servo mounting hole offset below in relation to the elevator control horn. There is no possible way that putting a servo arm up and another down that the geometry will be even remotely close. Unless WH has changed the design and relocated the servo mounting holes, so that they are directly in-line and centered with the horn, I can't see how the geometry could be equal with the arms in the opposing configuration.

Regarding the issue of adding another component that can fail..... Bear in mind that the components we are discussing are all high quality and proven reliable parts that are highly unlikely to fail. If adding too many components was an issue because they were failing all the time, nobody would risk $6K on a 40% plane in the first place simply because it.......has to many components that can fail.

The concern about running a pair of servos through a single channel is also much ado about nothing since the reciever is merely a buss that supplies power to the servos across 2 circuit board traces that have less current carrying capacity than the extension wire does. If your really concerned about this being an issue just put a short Y between your 2nd receiver pack and the servo to apply current directly to the servos.

You are running a 2nd reciever pack....aren't you?