I see signs of it being used all over the place. It can easily be exported into game engines. The amount of morphs and creature types are pretty astonishing. To be honest with you I'd likely always use this as the base for characters if they are human or humanoid and perhaps build up from them. For the average human type needs it is pretty phenomenal and I can focus my needs elsewhere. It is actually my son @theanubisrider that tends to do all the modeling on our side. I do use Daz myself quite a bit, and I have the Decimator product so if need be I can also tweak texture atlases LOD and a lot of other things before I export it.

My focus is on game development, but this will likely be the tool I use for all humanoid characters. They look very good.

I often see AAA game titles coming out and I'll see things that make me think this is likely what they used. I don't blame them, the quality is certainly high enough. In fact, by default it is higher than you want for a game based upon current hardware, but you can scale that and do some optimization to address that.