Just some thoughts on the design:
1. Chromoly 4130 Steel frame and fork: Unlike the more exotic steels, aluminum, ti, carbon, etc... a simple steel frame can be repaired pretty much anywhere in the world without much fanfare by anyone with basic welding skills.
2. 26" box section wheels / tires: Again, like the steel frame, the key is being able to find replacement parts anywhere in the world and you'll find 26" wheels, rims, spokes, tires more often than not, even in desolate places, whereas a 700c wheel or tire could be hard to come by.
3. Non-STI/Ergo Components: Bar-end shifters and dedicated brake controls (DiaComp 287) are bomb proof and easy to service in the field, even under the most harsh conditions.
4. Cantilever Brakes: They work with any brake lever and parts are plentiful.
Anyway, you get the idea. Simple works better when you're heading off the beaten path into places where ride support is what you bring.