I have the RT06 saddle on two bikes and find them to be as comfortable as the Specialized power saddles I have on other bikes. I prefer the smooth version over the perforated.

Crashed my bike , so decided to try the LTK266. Alisa was very helpful and said it would be done and shipped soon. (size L, transparent glossy blue)
Still a bit sceptical about the seatpost. It seems very wide and non-aero, and that bulky ritchey clamp is kind of a pity as well. Same goes for the seatpost clamp solution - not the best design I think, but again hopefully OK.
Ordered a 55R low stack headset and hopefully will 3D-print some adapters to get a nice transition to my stem. Going with semi-integrated with the brake hoses running open under the stem, was my plan.

Was there a STL-file for di2 battery holder? Went through the posts but couldn't find it.

The seatpost clamp has been problematic for me. I ordered a raw frame and painted it myself. The fit of the raw seatpost was very sloppy. I sanded the inserted section of post with 80 grit and applied an additional 4 coats of clear to add volume. Even then the 3 piece clamp did not have enough travel to bind the post effectively. My fix was to add a piece of .004 brass shim stock between the frame and the clamp effectively making it thicker. This, along with exceeding the printed torque limit to 12Nm, seems to be holding.

Any one been in contact with LongTeng/Alicia recently?

I placed an order for an XL frame mid December and got info to expect production in 2.5months.
It's now 3 months since i placed the order so i mailed Alicia begining of this week to check status of my order but i havent recived any reponse.

I just received shipment notification and a tracking number from Alisa on 3/16 for my size S. Just landed in Louisville today.