I've tasted it, wouldn't place it on my list of preferred honeys. The fact that you can get used to just about any taste, doesn't mean that you really like it.
On the other hand, buckwheat too deserves to be pollinated, so when it's out there flowering, I wouldn't distance my hives from the buckwheat field intentionally. Your best bet is the hope that you'll get a mixed source of flowers for your "buckwheat honey" and the blend can be quite nice.