Just mounted mine today on DT Swiss 460's. I also mounted them with Skinny Strippers. I was worried because of this thread but with some soapy water and one tire lever, they went on fine, even with the Skinny Strippers.
I used a compressor to fill them up and both held air the first time. I deflated them and added 60ml orange sealant. Today they measured almost exactly 38mm. I'll check again after tomorrow's ride.