Anyone with Seraph GR 267 or GR 257 experience?

[jonaslini]

Does anyone here have first-hand experience with the Seraph GR267 or GR257 frames? I'm also considering the Seraph LC50C38 wheelset.
Also people's recent experience with seraph/tantan?

[Glencoco39]

This thread covers the GR257, I have yet to find info about the 267 though, and I'm racking my brain trying to remember what bike I saw that used the same type of seat clamp bolt from inside the frame triangle. I know it's a copy of some larger brand but really can't find which.

https://chinertown.com/index.php?topic=7368.0

[Chiyou]

As far as geometry is concerned, the GR 267 seems to be very similar to the Mondince 346/376 and Spcycle G028 frames.