The updated Clippy has the ability to copy text that is not necessarily in the text field eg received sms messages. It also has a new stack clipboard.
But the new double tap to copy is finicky when it comes to accurately double tap and where you exactly want to start copying. hClipboard does a better job at copying specific lines of text.

My personal peeve is that Clippy always shows the menu bar over the text window in sms so I have to take an additional step to click close in order to see what number or punctuation I am typing.. hClipboard does not and is cleverly only activated when one presses the globe icon.

Poll here to tell us which you prefer and why