Nokia N9 Leather cases

The Nokia supplied ones r pretty slim & good looking:
http://europe.nokia.com/find-product...3-for-nokia-n9

The bookcase type from Amazon is awesome:
http://www.amazon.com/PDair-Leather-.../dp/B0063Z9O5I

Melkco flip type case is another variety:
http://www.youtube.com/watch?v=KJwrJ5E5uGw

However, with the 'supplied' one snugly fitting our phones do we need another?

Qorax