UPDATE: I've been running 38 F / 36 R psi for about a week. I like the ride over bumps in town, but I did some 65-75 mph freeway driving this week and felt they were noisier than I remembered them being when they had more pressure. Since I can never leave well enough alone, I aired them back up to 44/44 per the door placard. SO MUCH BETTER overall. A little stiffer, yes, but the big differences are:
1) Speeds over 40 mph. MUCH quieter.
2) Low speed turning is much improved.
I can say with confidence that I really like these tires overall now, and the slight bit of extra noise will not bother me for the aesthetic and off-road gains. I'm going to keep them where Ford says to keep them on the road, and will air down to 27 off-road like I have in the past.