Follow-up: After a little over a week driving around with the new swaybar I can say that this thing is a life changer. It took the truck from a pretty decent riding big truck to a very comfortable vehicle.
Steep angled entrances and driveways, diagonal speed bumps, potholes, railroad tracks, they all disappear now. I’ve even intentionally hit some uneven drains in parking lots to test it out and you don’t even notice them. I know it sounds like I’m exaggerating a bit, but honestly I didn’t expect this much difference. I figured it would be just barely noticeable and I’d question myself for months about whether I should have spent $500 on it, but it’s truly an enormous change.
The only “negative” is that there’s a bit more lean in cornering and on curved on/off ramps, but it’s still way less than my Jeep had, so I’m ok with it.
I also did 500+ miles towing today and it had no effect on handling with the trailer (other than of course the previously mentioned comfort improvements.