I just got off the phone with Work Sharp to help solve a problem with the honing guide included in the Wide Blade Attachment. During the conversation, the rep told me that I was lucky to get one of the last Wide Blade Attachments, as they have been discontinued due to lack of interest. Kind of a bummer, cuz I find the WBA to be a good option for any blade, because it is very close to sharpening with stones and a honing guide. Anyhow, if you always wanted one, you might look into getting one now.
If I'm wrong, I apologize, however I'm just going by what the Work Sharp rep told me.