Ask HN: Any experience of using an eWriter (a la BoogieBoard Sync)?

Hello all, I am an avid note taker and impulse buyer, and seeing the release of the BoogieBoard Sync (an LCD eWriter with a syncing option) has me salivating. But reviews on the contrast are putting me off, I was wondering if anyone has used one (or something similar) and could offer up some feedback?

Thanks!