It's basically the same as the old Davis. Not a good choice for a general use BUG.
Quality control is going to be a bit on the iffy side.
Derringers in general aren't the best idea except under certain limited circumstances. I say that as someone who currently has two of the better ones. Bond and American Derringer Company (which may be out of business) make acceptable quality derringer. But they are only slightly smaller in overall size than a J frame, and they're rather heavy. I think ADC made some alloy ones, but my only experience is with an all steel 9mm ADC.
The Bond guns are even beefier, so you could just about club someone with one. But you have to manually click the safety off on a Bond, whereas it clicks itself off on the ADC.
(I used to have one of the old High Standard DM101 .22 Mag Derringers. Never could hit anything with, finally held it up real close to a target and discovered that it keyholed badly.)
In any case with a SA derringer you have to bring the gun up, cock it (which requires a good bit of force with the Bond) and hope for the best.
I don't have the same level of hate that many have for Derringers since they can be useful under certain very limited circumstances when their size will lend itself to being a BUG to a BUG or a forlorn hope piece. But their limitations preclude them from being good general purpose BUGs - low capacity, generally not that accurate, many makes of questionable quality, SA operation, etc.
If I were to get a Cobra Derringer, I'd get the .32 H&R mag one and load it with .32 S&W Long ammo. Why? I wouldn't trust JHPs to exand and probably wouldn't want them to in .32 Mag out of that short a tube since it would inhibit expansion. The .32 SWL with RNL will at least poke a hole. It'll also be more controllable and likely to last longer than the .38 Cobras (unless they've tweaked the old Davis design some, the .38 was pushing the envelope of that gun). If you do get the .38, I'd load it with wadcutters.