I have been aware of fake viewfinders (LCDVF and z-finder) on the market for a while but the sellers were mostly advertising on eBay or Craigslist and the products they were selling were cheap copies. Until recently.
From what I have gathered over the net, these are identical products in specs and manufacturing. They even seem to come out of the same factory in Poland! The difference? The price, the replica is much cheaper. Actually, if both products are identical, can we rally call the non official version a replica? There is surely a good story behind this.
So pick the one you like, one thing is for sure: both are cheaper than the z-alternative and work fine with the current generation of camera LCD!
If you happen to buy the replica, please leave a comment to confirm if it is identical to the official model or not.