No idea how many pony-dedicated squads there are - I was hoping this thread would begin to put a number on it, but it hasn't helped a lot. I'm pretty sure the 412th Braunco Mustangs fly Ponies, but not sure which skin they use, if any. The 353rd and the 325thVFG have clear choices, and I do see the blue-nosed Cripes A'Mighty often in the air, as well as the 4th FG's Man O'War (both Fencer's skins). I assume Fester's skins see alot of use, too.
Apart from the implied connection between historical FGs and their 51s, I'm at a loss to determine which 51s are seeing regular squad use. (And I haven't even started on the '51B).
I'm a little surprised how often I see the default skins for both the 51B and D up; maybe that indicates a number of people don't use custom skins, or really like the default skin's subject. I think both defaults are nice-looking schemes and hold up well against many of the submitted skins.
But yeah, Slash - if you can help ID the 51 skins that have regular squad use, that'd be great and appreciated!