I understand V4 is ancient tech.  From my perspective, on the surface, Genesis looks like a viable alternative, but everything I've read by more experienced users and content creators has said it's worse than V4.  Understanding why has been like trying to read Greek.

I may be able to help you out here...

While I no longer use Poser, I do have one bright spot that I discovered in all of this (oddly enough, with D|S). I held out against using Genesis, mostly because I had a mountain of V4 stuff. Then, they came out with V4 for Genesis... it was like seeing your girlfriend's boobs for the first time. All of the V4 stuff I owned just fit - and no need to push and pull to get it to fit anymore - it just did, even on custom G2F meshes. ...at least in my case, that was the perfect solution. 

Now for Poser? I don't know if Poser has anything similar, but you can at least use D|S to get the G2F figure fleshed-out and clothed, then export to Poser to do what you will after that.