Nope. No strapon needed if you have a Plus 4
EDIT - More seriously, when I bought the Plus 4 I was strongly advised against the leather strap, and shown what it does to the car, no matter what precautions. And I was also told that it didn't serve any real purpose anymore. So I didn't buy it and I never had any trouble.
With the M3W I am already noticing the litle scratching it does, and I only got that part because it comes by default with the Brookland Edition car. I'm considering a removal, will be stored and fitted again in the unlikely event of me selling the car sometime in the future.
