I dunno, joee. When the 5W-20s hit, the prevailing view around here initially was, "not in my engine!". But several people pointed out that Ford and Honda's metellurgy and clearances hadn't changed. The 5W-20s seem to be holding up and engines aren't tanking. Yeah, the original intent was to boost CAFE numbers a smidgeon, but the engineers and blenders seem to have thought this all out. (Amazing...) I'm tempted to try an interval of 5W-20 in my Hyundai V-6 at my next oil change just to see. I purposely broke the Korean in on 5W-30 (Hyundai recommends 10W-30, 10W-40, or 10W-50 for year 'round use above -10 F. and it NEVER gets below +30 F. where I live.) after the first 600 miles and saw no observable oil use, so I suspect one of these "super" 5W-20s wouldn't be catastrophic either. Funny thing is that the Korean has just as tight bearing and cylinder-piston clearances as Honda's and in some instances, tighter. "Flow, flow, flow" says it all...
As an aside, I took Patman to task for, what I thought at the time, "recklessly" suggesting 5W-20 for folks in cold climates instead of the usually recommended 5W-30 oils. In hindsight, I believe Patman was on to something. I've seen the light!