Now I have a definitive answer, thanks!
It probably is a factor that the reliability of the dual row plus the (I'm guessing) 100% success rate so far of the dual row retrofit has aided in the decision for no IMS Solution for the earlier cars.
I'm likely to retrofit the weekender when clutch time comes, but the daily driver is still up in the air. With nearly 140,000 miles on it, it would be my luck that I'd retrofit it, and then something else would give out and shred the engine. I'm debating if i should just drive it Til it dies, then install an upgraded engine, or look for a deal on a 2009 model for my next daily.
