I see your point regarding recoil, smaller payload etc.
But if we make small generalisation, your Baikal is protruding 20" farther from your hand than a 4" barrel pistol. Plus it has buttstock (?) So in effect you cannot holster it, it's more difficult to point with one hand. Plus side is, it's much easier to see where it's pointing at, and slower to move it (when talking about unexperienced users (not you) and pistols, one problem is that they swirl around and pistol is pointing here and there). Another plus is, having the 12 gauge bore will probably act as "attenuation device", bringing the noise at shooter (or bystander) down.
From purely "performance point of view" I can imagine a double barrel 410 pistol (shotgun w/o buttstock) with 8 - 10 - even 12 inch barrels might be very good tool for HD. Probably loaded with smaller size pure lead buckshot. Legislation might get in the way, though.