Thank you, that is certainly interesting, however those improvements were measured by analysing English prose. If your everyday usage is different, especially if it’s a significant difference (programming, or a different language, which might not even be related to English and might make use of accented characters for example, that are by default not even present in these layouts), then the layout change might not give you a similar benefit.
In my case I think the costs (being less efficient on random keyboards in the world; angering my wife if she tries to type on my keyboard; having to research which layout is optimal to my current usage which could change; learning curve) outweigh the benefits I would expect.