If you can get a Wechat contact, I can communicate with them and see if maybe they would be willing to send me a sample. Shipping should take only one day since I’m in the same city. I’m not sure if they have some available already though.
I can test lumens and candela (I’ll probably put it in a C8 size body), but can’t test CRI or tint.
Given that there is a small gap between the dies, I can not think of a reason why there will not be a visible donut hole in the hotspot when used well focused in a smooth reflector, like we do in flashlights. It may be limited but it will be there, and an OP reflector may be needed to smooth it out.
The manufacturer may not realise that that is how a led is often used in a flashlight, as opposed to general lighting/car uses.
Well, as for why I trust them and do not worry, similar LEDs like the XHP70/XHP50 had this problem being domed LEDs with gapped dies, but when being dedomed, the problem went away.