i think the handle length is the same on all fo them isn't it?

also it really doesn't matter, a thinner knife can cut just as good as a thicker one... its all in the edge.

so don't worry about the thickness.
you might want to talk to rainwalker, or leatherface for carry(piggyback maybe) options.

they're both great sheathmakers, and you can see some of their work on the forum.

goodluck with SYKC, you might also want to consider swamprat, and if you have the money Busse.

they're all related to scrapyard.

a little more pricey though.