I agree that PascalCase makes more sense on systems like Windows, where everything is case-insensitive, or in shells like PowerShell, where virtually all commands are shell functions rather than separate binaries, and the shell itself is case-insensitive. Then, I suppose you get some legibility benefit, without any extra hassle.

I'm personally still on the fence about the more verbose style. I think I like it for directory names but not really for executable names.