To set up G2 without using DSON I use Netherworks' Creators' Toolbox. I use DSON initially to open Genesis 2 in Poser, which has the tongue, then save a new CR2 and run that through the File Optimizer included in the Toybox package - this modifies the CR2 to remove any calls to DSON and creates an obj file. You'll need to do this for each of the characters that have their own UV set so that each has it's own obj.

If you do use G2 figures divorced from DSON in this way, then you lose the DAZ subdivision, which means that HD morphs won't work - on the other hand, much of the fine detail you see in the promos for this generations is in the normal maps which aren't a problem to apply. Just remember to set the skinning method to Poser Unimesh so that you can apply Poser's subdivision at render-time.