I don't mind them. The biggest hurdle is the cost. I bought a case of the Crinklz astronaut diapers a year or so ago to see what the fuss was about. They had a great fit and were incredibly absorbent.
I decided to "downgrade" to the BetterDry diapers since It's the same diaper without prints. I have also tried the NS Lite diapers. They were fine but I needed some more protection at night.
My wife got a big kick out of the printed diapers. She couldn't believe they made them. She would sometimes tease me a bit, but nothing bad.
In the end, I will probably stick to plain white diapers. The colors or prints are fine, but I feel like I would have less explaining to do if anyone discovered a white diaper vs a printed one.