In earlier Japan when warfare was common, it would not be uncommon to stumble across many swords that were of mediocre quality, particularly in a few isolated spots in history. A sword of quality like a PK would be fine for warfare, as the sword was not in the spotlight yet. Still have to remember that the sword was not the prime weapon choice. It was one of a decent array of weapons used. It only became really popular after warfare ceased.
Also remember that many people these days are not swordsmen and don't care to learn proper sword usage or how they treat the swords in terms of what they try to cut. The more competent and knowledged swordsman will be able to use something cheap like Chen's stuff but would prefer something better. If I didn't see swords like the PK as viable weapons in the context of Japanese-style swords, I would not support them at all.
Shinryû.
Addendum: A big concern is safety. It doesn't matter if it was old Japan or not, a sword cracking, chipping, breaking, dismounting, et cetera is a DANGEROUS situation.
[This message has been edited by Robert Marotz (edited 03-10-2001).]