I just dont get it, why people want to use double dip case to avoid phone damage, and then to use some phone wrap to avoid damage being caused by double dip flip.
In my ears it sounds like: "I need to protect my phone from being damaged by phone protector" - absolutely nonsense.
Why are you doing this ? For resale value ? Your phone is already 1 year old (from release date), it will be worthless in another year. The battery in it will be damaged much more by using than actual case of the phone.
You have two options:
1, Forget about protection, buy cheapo pouch from ebay. When I use the phone, it shows all its glory, and I can "feel and see what I have paid for", and while i am not using, i put it in pouch and can toss it in my bag without worying, that it will be damagedl
2, If you tend to protect it at all costs, buy another case. I have Incipio Frequency, which was tough and soft enough not to damage your phone at the same time. Unfortunatelly, the case became a bit loose at volume rocker causing squeaking sounds. Then I just realized, what I am just trying to explain to you. Or, take UAG case - it is soft inside, and hard on the outside.
Same answer for official car holder, it's already almost snug fit. Putting wrap on the phone could cause unability to put phone in official car dock.