The Lamborghini carbon seats are fixed shells Stefan with minimal padding. They are very uncompromising for road use and have fairly high sides which makes getting into and out of them more challenging. I had the opportunity to sit in a Gallardo LP Superleggera with the fixed carbon seats  and then a Huracan 610-4 with the new carbon seats at the same dealership. The Gallardo ones weren't exactly comfortable in comparison to Ferrari's race seats but they were better than those in the Huracan IMHO. I think the SV uses exactly the same seat as the Performante. I would certainly not choose them if looking to use the car on the road.