Partial tangs, or rat-tail tangs have been around for a long, long time.
These two tangs are not the same as rat-tail tangs. Some rat-tail tangs, like the one I have on a bolo I need to rehandle, are pretty strong, not that I'd choose it over a full-tang.
The tangs of true Japanese katanas that I've seen extend only about 2/3 of the way into the wooden handle, and are then held in place with bamboo pins. They seem to chop just fine.
These tangs are almost as wide as the blade and nothing like these new Cold Steel tangs. I've only seen partial stick tangs connected to a rod on cheap knives.
Well, flesh anyway, which is also a Bowie's main function.
Maybe for the Natchez, but the Laredo is also a ulitity Bowie, and that has an even thinner tang.
I've also demonstrated with other examples of fighting Bowies luch as the Livesay Sandbar Bowie and the Ontario Bagwells that a full exposed tang does not have a negative impact on the balance, so even a full-length stick tang like they have on the Trailmaster wouldn't either. I've also handled a custom hand-forged fighting Bowie at a gunshow (I could not afford such a knife

) that had a full exposed tang and like the two I mentioned, the balance was very good. The "fighting knife" excuse for a weak tang isn't valid.
Considering how much steel goes into the blade, the extra amount to make it a full-length tang or even a full exposed tang is minimal.
It is also interesting considering what Cold Steel says about tangs in their FQA.
Having said all of that, I'm just not paying that much for a production knife made in Japan. Cold Steel's gotten a bit too proud of their knives of late and their pricing is out of control. They've got some great designs, but I'll hold off until they start making them in the U.S. again and they aren't charging custom knife prices.
Custom prices for factor knives are too high, but that is only for the San-Mai knives. The SK5 Laredo usually goes for around $120.00.