It looks like Gretsch makes a Tenor Double Model #G2192 that seems readily available including Sweetwater. It's not exactly a looker though.
Apparently Uke Crazy (Kala) made/makes a nice one that ukulelesite.com sold but now indicates out of stock. When last sold there, it was only $57 and doesn't seem to be around anywhere based on a search its model# DUB-2TPG.
Maybe that Fusion is the way to go but pricey.