I would go with the 2 piece wheel myself, it makes internal double beadlocks easy to deal with when dismounting and mounting tires, unlike innertube (Staun) style. Having run H1 wheels on my rig and changed tires on them, I could do that with one arm if I had to (nothing to do with you Adam, just thinking about trail injury) to patch or replace a tire. I have a hard time working tires on and off standard wheels by hand myself with full use of all limbs, and have come closer to injuring myself working with prybars and tire spoons than with a wrench and 8 studs.
The H1s and other solid-type internal beadlock wheels don't suffer the slings and arrows of bead seating either. How often is that something without drama, especially on the trail? I've had to resort to explosive seating on the trail (one reason I carry lots of straps now), surely a 2 piece wheel with a solid internal lock is safer than that?
Adam, where's the buggy build thread? You still on for the BBQ?
I can't call my Dak an expedition rig. I'd jump in it any time and drive it across the country, but with only about a 250 mile range and a measly extra 4-5 in a can in my bed rack that's no remote location explorer. I'm usually known as the rolling toolbox for my spares and tools, but have only one spare tire, no OBA yet, only carry an extra gallon of emergency water, and have no onboard comfortable sleeping arrangements, but I do always have my camping gear, CB, cell, GPS, etc....
It speaks to where I wheel it most. It's seen trail time in CO, NC, NY, PA, MA and VT but rarely further than I could walk from a main road. This is still a forum that I'm going to keep an eye on, I really respect rigs that really get way out there and can be self sufficient.