In January this year I had an opportunity to fly JS-1 in South Africa. The interior was done by Deluxe Gagula and I must say that I was impressed in every possible way.
The overall feeling is as if you are sitting in luxury sports car. The color is wisely chosen and makes no reflection on the canopy. The stitching is very strong and sturdy and it is apperent that it was made to last for many many years. The leather is of the highest quality and it even has that nice smell similar to a new German car smell :)
The leather is perforated on the seat portion allowing air to freely circulate therefore significantly reducing sweating and condensation underneath. To my great surprise even after a long flight the seat pan under neath the seat cussion was completely dry !!!
I highly recommend Delux by Gagula glider interiors for their high quality, modern looks and functionality designed by a glider pilot for glider pilots around the world!