This is a very obvious stupid tip but on the other hand since i just spent 10 minutes starting to implement it as a new feature in the program before I realized how easy it was to do with current version, I thought it would be worth a mention.
Sometimes you copy some formatted text to clipboard from a program like Microsoft Word, and you want to paste it back into the program as plaintext.
Because CHS works with plaintext clips, the easiest way to do this is, instead of pasting with the normal system CTRL+V hotkey, just bring up the CHS quickpaste menu (defaults to Ctrl+Alt+Q), and select the most recent clip (usually bound to shortcut key '1').
This will paste the last clip as plaintext.