Single display applications like Smoke and Scratch will greatly benefit from it.
I´m in for one if I get a decent project for the home studio.
When it comes to pure Resolve, my money is on a Cubix + 3X680 cards
Keep in mind that, at least for some people,it might make sense to utilize both types of NVIDIA cards if you're using the workstation to support multiple applications.
The same situation also applies to studios where multiple users with different applications would share 1 or more Xpander Desktop units. Each workstation would have an Xpander HIC installed in an open 16-channel slot, and users would connect and disconnect the box to multiple hosts as needed.
An Xpander Rackmount Series II or Xpander Elite, mounted in a mobile 19" cabinet or cart, would also serve the same purpose.