I have mixed feelings about this, solely because I feel like it uses Dr Paul's name, words and likeness almost to promote Bitcoin.
I think I would share the sentiment if it were something professionally done, but it looks like a small-time homebrew hobby project done on a laser printer in personal quantities, and it seems pretty apparent to me that it's not endorsed by Ron Paul.
If Rob had cranked out 100,000 of these from a printing company, I would probably feel different.