I agree 100%. I pretty much exclusively off-road my truck. I have the stock pump and reservoir. I had no issues at all until I put 37" General Grabbers (very heavy tires) on. 50k off-road miles and I'm on my second pump and I'm still running those heavy tires.
I will say I've had hoses blow off three times, but unless you are changing the front end around the stock will work fine. Replace the reservoir if you want a little extra safety.
A stock pump is $200, the Howe is $1000. I just carry a spare pump with me. I can swap it out 3 or 4 more times before I would have paid for the Howe. I also have a belt I carry that fits the 6.2, bypassing the PS pump. Worst case, I'll go without PS to get off the trail.