Shaper cutter dimensions shouldn't matter any more than saw blade dimensions or sand paper grits.? You will still set stops, fences and depths.
One size fits all.? Hmmm.
Although I use both system, saying metric is preferred for its simplicity is like saying McDonalds is better food.? Is there a best language?? In fact, I can visualize a pound-foot better than a newton-meter and a horse power better than a kw. I enjoy variety like the English stone, equine hand and RCH for really close work.? Base 12 is as effective as base 10.? Anyone that ever shared a sandwich can use fractions.??
Errors creep in when trying to use both systems on the same project.? Ask the guys who built the Hubble telescope.? Show your math.? Stick with the units your customer uses or what is already established like working on a Yamaha engine.? If all you want is efficiency, lets go back to Whitworth.?
In the mean time, I like using bushels and pecks and prefer drinking Imperial Pints of John Smith Bitters to a 12oz can of Miller Lite.??
Jonathan Smith