S&W lost a pile on the Schofield in spite of the high price, so I don't think they are about to go into another such venture with an even less well known gun. AFAIK, Navy Arms still lists the .44 Russian and No. 3 though. None, of course, are DA.
Before anyone asks, I don't recommend shooting black powder in a .44 HE or the like. The more modern guns are just too hard to clean up after black powder shooting and too easy to get crud in the actions. (Been there, done that - cleaning up a Model 28 after some experiments with black powder in .357 cases was, well, interesting.)
BTW, Oracle, the DA Starr is top break for disassembly or possibly cylinder swapping, but I don't think it is in the same category as a cartridge gun meant to be loaded that way. It also really isn't double action; it is the only example of true trigger cocking that I can think of off hand.
Jim