I've been playing around using DS4.5 quite a lot, during my experiments with using Genesis in Poser via the DSON Importer.

The latter, the DSON Importer, definitely needs more work... or more tightly integrated with Poser... whatever... if it's going to work as it really needs to. It's useable at present. But far from great. I do hope build 1.0.0.4x (or whatever it ends up) is going to deliver some major improvements.

But, necessary improvements in the DSON Importer aside...

...DS... stands for "Dark Side" here right? He he ;-)

Anyway... the latest build of DS4.5 is actually running pretty slickly for me, on OS X. It seems a lot of work has been going into this app, since I briefly tried the version 3 that I previously downloaded a year and a half ago...

I've been using it a fair bit for converting clothing... and also now morphs, using Gen X.

As a utility, for preparing content... I'd say DS4.5 is getting to be a nice bit of software.

For me, though, Poser is still far and away where it's at for actually using that content... posing figures, composing scenes... and the all important mats / shaders and rendering.

Anyway... I digress.

In answer to the OP, the point is, I can now buy V4 stuff and fairly easily convert it to fit Genesis (if it is clothing) or transpose it to morph Genesis, if it is a character morph.

Or indeed just apply it, if it is a mat... if I wish to use Genesis in Poser... or indeed Genesis in DS4.5(!)

So why should vendors move on, in any hurry, from producing V4 stuff just now, if that is their comfort zone? I can still use their stuff for my cr2 V4 (and V4WM) ...and also use it for Genesis too...

...yay! ;-)