That might have something to do with the smoke your blowin' Nubsey.
421s are used in-studio all the time; I'd be willing to bet there's a sax miked up with a 421 right now somewhere in this world. 421s have been used to record the likes of Lou Marini, Clarence Clemens and Johnny Hodges and are on the short list for sax usage by engineers the likes of Bruce Sweeden and Don Smith. Can't get much more pro in-studio than that.
Yes, 421s are used on-stage more than the rest, but that mainly because they can handle the road stage better than a ribbon or condenser.
Royers are orgasmic for brass, as would be a U87. But TFunk is looking for a mic in the $200-$400; what you're hawking costs 10 times that range.
I'm not saying the 421 is the only way to go, but I just want to set the record straight instead of giving the rookie bad information that a 421 is a road-only microphone on the pro level. That's just plain untrue.
G.