If you knew how the scrolled buttcap was really made you would NOT want one. I've held them at Bill's place in Reno.
Here's the deal: the *maximum* thickness brass available to the kamis is the same thickness as the current flat buttplates (same grade as used on scabbard tips). Follow? The scrolled version is NOT solid, it's a flat piece just like current in the picture above, but with a "raised edge". The interior is a solid clump of epoxy.
Problem #1 is that the scrolled version is weaker than the current flat. The good news is, the flat plates in use now are *tough* brass, they may be thin-looking but they're damn tough.
Problem #2 is even more serious: you can't modify the grip! With the flat plate version, there's no problem doing re-shaping of the pommel butt to fit your hand or make the "points" top and bottom less pointy. You can shape the wood and buttplate to whatever you want and make them easily match each other. Do that with the scrolled version and you'll get a nasty surprise as the whole buttcap piece comes apart, the glue becomes visible, it turns into an unstable ugly mess.
With the *enormous* differences in hand sizes with the blades going all over the planet, all of the grips must have the ability to be slightly reworked by the customer. The scrolled caps make that impossible.
Bill knew *exactly* what he was doing when he specified flat!!!
Jim