Proof of Concept or not, as long as it functions and solves a real life problem, who cares.
Yesterday, I sent a BTC payment from, figuratively speaking, the one side of the Internet to the other side without a problem. Even with all this debate about Bitcoin being in trouble, it worked and I was able to transfer 'value' over the Internet. On Sunday.....
As far as I am concerned, no problem if this stays 'Proof of Concept' forever.
Beautiful isn't it ? Thanks for the comment :)