It works. The only fiddly part is that sometimes one card refuses to pass the video through to the next, so I have to swap cables to see the display. I don't know if an SST variable may allow control over one card or the other while launching, or if I will use a KVM switch to get around this. Still, I have been able to run both Voodoo1 only games like Whiplash and Xcar, as well as Voodoo2 games on the same machine, so this is a success so far.