The idea of two tokens working together (or in tandem) is something I've been pondering for many, many months.
You can check out this post I wrote last March that talks about "Two Tokens to Rule Them All".
Although POB and VYB are considerably different from the "Two Tokens" I envisioned 9 months ago, the idea is similar -- two tokens that work together, complement each other, but are distinctly different in their focus and application.
All right, I got that now.