Finally, when it does load on my Windows machine (using MSI installer and after convincing Microsoft that it is safe to run and bypassing their warning) it loads up super tiny on my 4k laptop screen and is unusable. I suppose I could mess about with the compatibility and scaling settings but I kind of lost interest after all of the above.
I tell you all this because obviously a lot of work went into this tool and from the screenshots it looks beautiful and useful, but is let down by the process involved to get it to run, at least on my machine.
For now, I will keep running HxD.