Well, if you don't mind using quick-widgets, they will probably give you the most flexible option. You can add animations, custom rotations, etc...
I am not a good designer, but I did whip this up while eating dinner.
clock.qml
Just add it with the quick-widgets app (don't set the size) and it should work.
It's very easy to change the font and formatting, I split up the month name, date, hour and minutes, if you want to split it up more it's possible.

Like I said I am no designer, but if you want some specific changes, just tell me and I can try to to it. (Personally, I don't know why more people don't use QML it is much more fun and less hacky than the other options...)

EDIT:
Forgot to mention that although I split apart the hour/etc... into separate items, it's not really needed because the text item supports html-like modifiers. I separated them because I am trying to play with the rotation of each element separately to get some nice shape out of it.