Claude Code skill invoication with / vs Codex using $

When I think about commands and triggering skills I have to say I like a lot more the way Claude Code does it in TUI with "/" than Codex TUI that uses "$"  or me slash is much more a hint for a command than $ which gives me vibes of PHP. 

I could be biased as I grew in times of IRC and chat with text based interfaces where slash commands were used a lot. 

For me `/` is a better fit symbol for something that looks like a command or something to be executed than the `$` but could be a personal preference maybe?