Can ICustomDictionarySource be used with built-in spell checking tool?

[Wesley]

I have a need to customize the access to the custom dictionaries that the Prometheus RadEditor uses (I need to store the words in a database).

I see that the stand-alone spell checker has the ability to use a ICustomDictionarySource to control how the custom words are loaded.  Does the spell checker that is built into Prometheus RadEditor have this functionality?  If not, does it have some other method of using a database to store custom words?