I remember when they first came out at the end of last year (before the Gen2 Sideswipe came out, because I was looking for purchase options online and came across the gold one thinking it was some exclusive limited item).
I thought I had posted about it somewhere other than in the ebay topic, but maybe not.

It is an unusual KO, but is actually more like a classic Knock Off, in that it is a different colour and not a counterfeit reproduction.