I practice a traditional form of Japanese Swordsmanship, Muso Jikiden Eishin Ryu Iai Heiho....and have NO interest in a titanium sword.
Yes, you can change speed and direction with a lighter blade, but weight is an important and valuable quality in a katana....as in, you want the ideal.....which would be somewhere between 2-3 lbs depending upon a number of variables.
One does not want to "muscle" the sword, you want to let it "run"....it needs mass behind the edge and it needs to be tough and hold the edge extremely well, which is one of the attributes that I have NOT found with beta titanium....it goes dull fairly quickly compared to a good steel blade.
The reason that you need weight is that the target was a metal helmet over a skull, and for that, you want something that has enough "oomfh" to cut the helmet AND brain your opponent.
I hope this makes some semblance of sense.
PS...Joseph that is a great looking bike, and you are a frikkin nutjob for driving it from Ohio to PA....but you know that, lol.
Best Regards,
STeven Garsson