Definitely. In fact, I'm sure that's what's going on with the 1500 emblems on the Route LA Custom Parts website. Those red/black sport 1500 Chevy door emblems have been discontinued for the better part of a decade now, the ones they're selling are definitely reproductions. You can find similar reproduction emblems on eBay as well now, they were unobtainable years ago when I was looking. I had to pay $$$ for used originals...
I haven't checked in a long time but I'd wager a guess that all of the OEM door emblems for these trucks (at least the style with the mounting tabs for the side molding) are probably discontinued now. I know the GMC 1500 ones are.