Well, it turns out, after talking to my wife - she had already ordered me a set of the OEM covers as a surprise - now that's a great wife
Told me I was too impatient
- so I cancelled the PYSpeed order...
Guess I'm getting the OEM's after all
On another note, I have purchased other CF items from PYSpeed that were totally fine and still installed after years - so maybe Jbook just got a bad set?