Only one prototype was planned with the twin-gun rear "barbette" but I don't think any were produced (can't recall, but think it was "planned" but not "built").
Overall the 219 has little to no place in AH. The 410, on the other hand, would have quite a following, methinks. I know I'd fly it! Bomber hunter, better JABO than the 110G we have now (new mission monster, no doubt!), and the more exotic weapons packages could use the "perked weapons options" feature HTC is trying to implement.
P.S. No matter what the actual performance of the 219 really was, it was one of the fastest night fighters the LW had. I can see how they'd welcome it for firepower and for performance, even if it didn't live up to "promised specs".