Sure CKE includes a spell checker, but you have to enable it or initiate it manually and it's a bit clunky. I would prefer if it did not block my browser's built-in spell checker.
http://docs.ckeditor.com/#!/api/CKEDITOR.config-cfg-disableNativeSpellCh...
good suggestion, I'll see if we can disable the CKE built-in one.
For the love of all things holy please fix this :)