After spending a few hours ranting about the removal of this feature (the combination of the S-pen and Evernote has allowed me to be truly paperless in my note taking for the last year), I've found a way of handwriting into the body of notes.
The keyboard has a button to the immediate left of the spacebar that has 4 options, one of which is to enable pen entry. This option is the one that looks like a 'T' with a pen at the bottom. If this isn't the one the button shows, hold down the button to see the 4 options and choose pen entry.
When you hit the pen entry button the keyboard disappears and you have a pen entry area. Your handwriting will be converted into text in the body of the note!
Hope this works for other people.