I believe that Mobinator is Evernote to OneNote only, not bidirectional. As far as I know, it handles handwriting and ink syncing fine.
As for the Flyer and Jetstream (or any Android tablet running Evernote), it syncs handwriting, drawings, web pages and other graphical bits quite well to the Evernote sync servers and down to the desktop (I use this feature frequently). The handwriting is saved as an image, though and lacks OneNote's convert to text feature.
-------------------- Lisa Gade Editor in Chief, MobileTechReview