I picked up a user grade 40s ss at an antique shop last week, and it is pretty much the most perfect, amazing tool imaginable... for my atg pass. I have a pretty heavy beard, so it is not aggressive enough to do good reduction wtg and xtg passes, especially if I have more than a single day's growth. I may try a feather in it ( instead of a red IP that was on it's last decent shave), but I suspect that it's better for my final pass+cleanup than it is for my reduction passes. That is why I'm seriously considering using a slant or maybe my slim on a 6 or so for my wtg and xtg then switching to the 40s ss to finish. Has any one tried this sort of thing and liked it(I'm going to guess that both are a resounding yes for at least a few people.)? if so, how has it impacted blade life? Do you go through blades faster, slower, or about the same? Do you find that more care has to be taken to prevent blade corrosion from water/exposure? Do you use a different blade in each razor? (ie midler in the finishing razor vs the reduction razor, or vice versa)?