Hey, I really like my split rims. None of this violent sweaty bead breaking stuff, just a tyre lever and a big screwdriver and off it comes. You can then patch from the inside, which is safer (but slower) than a plug, and at the same time see if the cause of the puncture has done internal damage.
OK you have to go slowly, but I'm in an Iveco, so nothing new there. Only other problem is that tubes with the L-shaped valve stem are getting trickier to find.
Just a little clarification, I'm talking about the two-piece rim where the tyre holds the other flange into its groove; no danger inless the tyre bead snaps (just as much risk as a tubeless).
I had a three piece rim until the first time I had to take off a tyre, then it went to the scrapyard. Bloody dangerous, John's warning applies.
Good luck finding them, perhaps you could wait till you arive in Africa to find them, if that's where you're ogoing. They're surely more readily available there.