If a whole digital currency doesnt work out in this digital era, what makes you think that the physical coin is going to be the one that will be accepted by the people.? Nah thats not going to work. I will even be among those that will be against this coin thing. First you should try to imagine how possible it is for people to make use of this thing you have here. How exactly are they going to make use of this physical coin?? By selling it? Does that make any sense? For me I dont really think so. And if the government gets you with this, you might even have a big problem with them.
We need new innovations and we need things that will make us keep up with the growth of technology, if we needed anything in hard currency, the our usual fiat that the government had corrupted for us would still have been manageable, after all, that is how we have been managing it for several years now and it has not completely destroy us.
The reason why many people accepted bitcoin technology is because of its digital form, and because it created avenue for its users to be protected through its anonymous system which other digital payment method does not have, and this is what makes it different and unique, so bitcoin in paper form or hard currency would really not attract much user to it and it would have been dead on arrival if this was the form it initially came with.