I got my hands on both of these cases and did a quick review if anyones interested. I have to say im impressed with the official flip case, its the one i use on a daily basis atm.
http://droid-den.com/accessory-reviews/official-samsung-galaxy-note-flip-cover-review/
http://droid-den.com/accessory-reviews/samsung-galaxy-note-flexishield-case-review/
http://droid-den.com/accessory-reviews/official-samsung-galaxy-note-flip-cover-review/
http://droid-den.com/accessory-reviews/samsung-galaxy-note-flexishield-case-review/