After I ordered my all terrain from my dealer he liked it so much thats mostly what he stocks now...although most of what he gets is the crew cab version. So I see quite a few of the All terrain pkg Sierras running around . So far my pickup is the only red extended cab around here....As for how rare they might become who knows, I guess that depends on the future of GM also.
True; I'm sure it does depend on the area too. Either way, mine is also a bit odd for an All-Terrain as well -- it's a Crew Cab, but it doesn't have the two-tone leather seats, mine are solid Ebony.
this is a bit off topic but how do you like your "all terrain" so far??