I understand it can be a pain in the butt to use but there are possible learning opportunities there too.
The most difficult part is getting the cutting portions of the blade to fully remove material to make a path for the skates.
With the #55 it is compounded by having to get the adjustable skate set properly for the non-symmetrical blades. Setting it the same as the fixed skate for the regular (#45 usable) blades is not a problem.
After that the biggest hassle is sharpening the blades other than the plowing blades, slip stones and patience.
jtk
"A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty."
- Sir Winston Churchill (1874-1965)