As some companies have found out, if something is built exactly to scale so every length and every curve and angle is exactly to scale, then the chances are that it will not look right. In full scale, there is a "balance" between length/height/width and curves and angles which cannot be recreated in a different scale simply by reducing/enlarging the original exactly to a given scale.
And in any case, even if something is exactly to scale in length, height, width etc., it certainly isn't to scale when it comes to thickness of the material it's made of - but that may be being a bit pedantic. As others have said, if you like it, run it!