I love them and wish I'd had this font to give to my intro students—mistyping a curly for a paren is annoying enough when you're experienced, but when you're new to programming and the error messages are not yet super helpful to you and you can't quickly spot the difference between curlies and parens, it can be a really rough ride.
The rest of the font looks good too! I love a good coding monospace that fully distinguishes all the characters.
You make an excellent point, but I can't help but think there are ways to make curlies visually distinctive without also making them look like poorly-done graffiti tags. There's no accounting for taste, but to me those are just plain ugly.
The rest of the font looks good too! I love a good coding monospace that fully distinguishes all the characters.