Just a cautionary note in reference to the new made adze handle, it appears to me to have excessive sweep in the handle to say the least.
Just imagine trying to use the adze head to do work between your feet, you would have to move the handle's top toward your body making the adze head enter the surface of the wood at too sharp of an angle.
In all my years of working with historic tools and examining those in many famous collections, I have never seen this much of an excessive curve. If anything the handles in lots of cases were straighter.
It seems to me that if excessive curves were better then I am sure during the centuries that adzes were used this feature would have came to light.
This is just my opinion for what it is worth,

NH