Would you walk down the street with a 5 foot long sword on your back? Well, I would, but for most people the answer would be "no" and unless you are in a costume, it doesn't make sense.

Now, personally, I'd be all for it. So long as you are responsible (which should go without saying when dealing with any potentially dangerous object) I see nothing wrong with celebrating the weapons of Scotland. To me, it is no different than showing your admiration for the clothes, food and music.

But still, if you are not in a costume, working at a booth, or walking from the booth where you bought the item to the vehicle which will be transporting it home, most people will probably assume you are an idiot.

Then again, that will probably vary from place to place. Some will frown on it, others may encourage it. Probably not nearly as many of course, due to liability issues, but to a certain extent I'm sure there are some where such things are welcome.

And you never know when you might need it. You wouldn't believe how many times I have been at a picnic or family gathering, minding my own business, only to be brutally attacked by a vicious watermelon.