If you are srs enough to buy a PM then you can probably dig out an old hollowtech 2 road chainset from your spare parts bin whilst your wallet crushing misery bringer is being warranty repaired.
BUT THEN HOW WILL YOU KNOW HOW MANY WATTS YOU ARE PUTTING DOWN?
Very few is the honest answer. But hey, if you can add toys like this... why not! Same for most of the DA Di2 stuff when the Ultegra Di2 is good enough.
If you are srs enough to buy a PM then you can probably dig out an old hollowtech 2 road chainset from your spare parts bin whilst your wallet crushing misery bringer is being warranty repaired.