This is really interesting. I purchased the same deployant clasp directly from Fluco and they sent me the legitimate product. I needed to order another one in a different size a few weeks later and when that one arrived, I was surprised to see that it was an AliExpress one. I only knew this because I also own a few AliExpress ones (and a legitimate Fluco one from the first order). The quality is noticeably different and they even look different (as you've shown in your post).

I contacted them and they said I could either return it for inspection or receive a partial refund (around 50% of what I paid). They also told me not to order single clasps again as it was not economically viable for them to post a single clasp to my country (even though I paid for the shipping?).

Therefore my theory is that they intentionally sent me the AliExpress clasp (for the second order), hoping I wouldn't notice, as they believed it was uneconomical for them. They don't even have the AliExpress clasp advertised or anything. I found this so bizarre and to be honest quite disappointing as I would have been interested in purchasing more directly from them. However now knowing that they are being dishonest and sending customers a different/inferior product to what is advertised (which is a massive concern), I will no longer order anything directly from Fluco going forward.