Depending on how you drive this could be not so great.
If you go fast the spring rate rises so incredibly fast once you're into the overloads that the shocks can't control the rebound. That makes the truck feel like it's bucking. BT, DT, yanked them things.
For slow speed work I can see where it might work if carefully set up. You easily could get into a sitch where you're taking the main leaf well into reverse arch even thought he overload is flat. The other leaves will cause this.