When styling submit buttons me and a colleague got into a discussion regarding submit buttons. Should they have a hand cursor or the standard cursor?

On one hand: Standard submit buttons do not have the hand cursor, the buttons themselves contain a call to action. However, having a static button without any kind of hover effect, is it obvious from a usability point of view if the cursor doesn't change?

So, submit buttons or indeed, anything clickable, should they use the hand cursor?