Some Poser plugins already exist, like for the Octane renderer and maya, cinema4d and 3DSmax. Most Poser users who also use Blender (myself excepted) see Blender as the adjunct to Poser vs Poser the adjunct to Blender, since most Poserites are fairly satisfied with FireFly as a render engine and use Blender primarily for content creation.

Under certain conditions, Poser's renderer isn't bad... it has a decent effect on organic models, generally. SSS is decently supported, even if caustics aren't. And no question setting up scenes - particularly ones containing humanoid figures requiring clothing - is quite painless for the most part.
Indeed, for clothing most Poser users prefer the 'conforming' variety (judging by how much there is compared to dynamic cloth), which for the most part delivers reasonable results with minimal effort. Personally, I find dynamic cloth significantly more satisfying to use, with results that one simply can't achieve with conforming cloth, particularly if posing the figure in any other pose but standing. The image above could not have been done with conforming cloth: both the serape and skirt are dynamic.

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks