I love KDE's "Present Windows", especially the 'current desktop' version, but I hate having to access it using the mouse, and would like to use Super+Down (ala elementaryOS). Is there a command that I could bind to this key combo that would achieve this? I had a quick search but couldn't find anyone else who had done it, though there were some using skippy-xd to accomplish the same thing. I'm using Fedora so whilst this is an option I'd need to compile it and would rather just use KDE's version.

You can change the shortcut in its settings (System Settings->Workspace Behavior->Desktop Effects).

The defaults are Ctrl+F7 (show all windows of the same window class), Ctrl+F9 (show all windows of the current virtual desktop) and Ctrl+F10 (show all windows).

Wow, that was quick, thanks very much! Knew it would be something silly I'd missed.