I doubt it as Build-a-Bear IMO wants to focus the My Little Pony line on little girls (hence of the Mane 6 and the Princesses)
You forgot that they also did a Build-a-Bear on 2/3 of the Cutie Mark Crusaders, unless they did all three of them.
While we're on the subject of plushies, I've read that there's going to be a series 2 of the TY Beanies Mane Six plushies, which means I have to either sell my Series 1 Twilight, Pinkie, and Fluttershy, or try find the Series 1 AJ, RD, and Rarity as quick as possible, because I've been hesitant on buying them at a later date.