I've seen the Gelu (Ryet) saddles myself and they are tempting. However, having owned Berk saddles in the past, I personally wouldn't go for them again. I had three saddles from Berk and had to warranty all of them. Sure, they're light and look great, and I’m well under the 100kg rider weight limit, but they always ended up cracking. So I wouldn’t be too confident in a Chiner copy either.
That said, I do have a Bjorn 3D-printed saddle on my SL8, and Ryet even has a copy of that now. For my upcoming build—which I'm aiming to keep as a budget weight-weenie setup—I decided to try the Ryet EVA saddle. It cost me £36.97 and weighs about 110g. Honestly, it looks pretty good for the price.