Clothes fitting will come later but judging by my limited experience with G3F, conforming clothing and hair should not be a problem.

The workflow I am developing involves Willdial's Genesis 3 Poser Importer, P11 with a working DSON install, and, of course, P12. When Genesis/Genesis 2 was released the figures and content were in 2 files, one for DS and the other for Poser (Poser Companion Files). IIRC, Genesis 3 dropped the PCF and Genesis 8 definitely does not have any Poser compatible files. Now, if you manage to get Genesis 3/8 into P11, facial expressions are compromised. Willdial created the app to update the CR2s and fix the problem. Willdial was also so kind to deliver the tutorial of creating the necessary PCF file.

Starting with the tutorial, I go ahead and create the Genesis 8 PCF exactly as described for G3. The same procedure applies to clothing and hair. I don't know if dforce clothing can be exported the same way but, ATM, we'll stick to conforming items. Once the figure is converted and exported into P11 we proceed to update the CR2 with the Genesis 3 Poser Importer. Now I believe that the pop-up window for saving the original or new object file with the CR2 in P11 is a new feature, I never seen it before with the SM version, so I assume it was added by Bondware. At this point, I retain the original object file for the new CR2 for updating with G3PI.

With the new updated G8 CR2, I load the figure into the P11 stage, set the subdivision to 0 using DSON, and resave the figure back into the Library this time generating a new object file in the process. Open P12 and navigate to the folder where you saved the latest G8 figure. Load the figure into the scene. You should not see any call for the DSON script and if everything goes correctly, you should see a fully textured G8 figure appear in the scene.

Apparently, resaving the figure in P11 breaks DSON and I'm surprised that no one has ever noticed this before. If you open the folder containing any DSON generated PCF you will find it populated with Python Script associated with the files. However, any figure I saved back into the Poser Library do not generate any associated Python Script. I wonder why it wasn't noticed before.