Could have gone with "TITAN XX" then. The added advantage is that the next one would be "TITAN XXX", and think of the marketing opportunity there!
The Titan XXX will be a breakthrough in VR.
What was the last dual-gpu card which had the name ending with X2? GeForce 9800 GX2? That was released in....2008. 8 years ago. I think by now it's safe to use X2 for other things, no?