Interesting. Looking at it. It's stylish.
Thanks!
As for the chopping, folks, you may be mad at me, but have anyone ever seen an axe, the tool designed to chop, with blade longer than machete? I mean that weight chops, not the length. If so, we don't need the long blade, we need power hit. As I already said, the lanyard gives you that power with a leverage, as you hold the knife way too further than the normal grip, with only an index and middle fingers on a handle and the rest on lanyard. Moreover, there is even more power from a swing between the end of handle and a your fingers on lanyard.
Physics!

Don't be mad, just try
^Doesn't understand physics...
Comparing an axe blade length to a machete blade length but ignoring leverage granted to the axe by the handle and the machete via the long blade... but then circling back around again to how a lanyard gives addition leverage for chopping. Comparing apples to watermelons...
So, some very basic physics for you.
Leverage: the exertion of force by means of a lever or an object used in the manner of a lever.
Lever: a rigid bar resting on a pivot, used to help move a heavy or firmly fixed load with one end when pressure is applied to the other.
Force: strength or energy as an attribute of physical action or movement
Power: the amount of energy transferred or converted per unit time.
Energy: the force that causes things to move. 2 main types of energy are kinetic and potential.
I would share some basic formulas but I suspect that would be too much.
Now, as to the actual question, you may consider looking at less common places like
Kailash Blades
who does convex grinds regularly on their knives and kukhuris. Their lead time is long but you've stated you're patient so no problem there.
Himalayan imports probably has one of their bowie or karda knife things that would fit your criteria, but I've been more happy with Kailash's blades as the edges come better for how I use my kukhuris. Based on your uses, one of the mini kukhuris might be a really good option if you don't mind the blade. I find the 7" kukhuri to be a great size balancing weight, packability (physical size), cutting ability, and chopping ability. The 5" loses a fair bit of chopping due to reduced leverage and weight, but you can figure that out with a lanyard I suppose.
The 5160 and heat treat from Kailash will give you a very sturdy product, as will the other kukhuri makers like HI. The rat tail will help keep the weight down if you don't go with a full-tang version, and this weight-forward balance aids in chopping (better potential energy at the point of impact).
If that fails, I think you need to look for a flying Guillotine since you're already a pro with lanyards and ropes.