I forgot to comment tomahawks evolved from trade axes, who were in esence renamed Biscayne axes. Biscayne axes are still produced in their birthplace and they have the fit type you want.
That's an excellent suggestion-to go straight to the historic source!Especially seeing that the local makers there tend to get into the exotic alloys for steeling axes,it sounds like....
(I can only imagine that any number of US smiths would consider forging a CPM -bladet tomahawk;i'd personally recommend asking Alan Longmire.An incredibly gifted smith specialising in hawks traditional to the US).
Ugaldie,i've not thanked you before for posting all this fantastic data on Basque axe-making/-manship,it's very impressive.
Is there a specific reason that that smith is targeting the more complex modern alloys for the edge?Edge-holding ability?Some different geometry that it can be sharpened to?
I've travelled through the Pyrenees camping in the mountains,and have bought myself a cheap hatchet at a sm all hardware store.It was a fantastic axe,very functional,and the compression eye was just excellently-designed/shaped...Never came loose while using the axe,but slid right off instantly for packing into my backpack...).
That was many moons ago,but i've often thought of that axe,as i have started forging myself,and never could come up with a decent proportion for the compression eye....It's deceptively simple-seeming,but simple it is NOT.(if i was up against a serious commission for an axe with a comp.eye i'd seriously consider copying one off some Biscayne axe...

Those racing axes are gorgeous,with all that height/depth of eye...Great tools,impressive workmanship.