That's what I was thinking too, Steve. That Chamonix camera is for people who want to 'dabble' in large format photography without being too deeply involved or committed.
This L-45A is for someone who is really into this type of photography and doesn't mind spending money to get the best camera available.
Take a look at this guys thread over on the rangefinder forum:
https://www.rangefinderforum.com/node/177091
He is the type that could/would be interested in what the L-45A offers, IMO. [But he's probably already so heavily invested in his cameras he'd have a problem justifying a switch.]