I may have to pay another visit to my local Sears. When I wrote that, it was because I found a model on the floor of the local store that confirmed what a rep had told me: .84-inch magnesium anode and 2.5 inches of insulation.
But when I search Sears site online, nothing is actually identified as being a Power Miser. There is just a big long list of water heaters at different prices.
Anyway, yes, you can still take the Roto Swirl dip tube out. Dip tubes are pretty flexible.