Seat Covers for Luxury cars with hi-tech safety features

I was searching for a treatment connected this taxable connected this forum however, astir discussions are lone restricted to debased outgo cars and hardly immoderate circumstantial to Mercedes, BMW, Audi, Volvo etc. These days, luxury cars travel with aggregate Airbag setups including Centre Airbags and Specialized Airbags isolated from regular curtain Airbags ( spot SIPS - Side Impact Protection System offered by Volvo and a akin strategy by Mercedes S-Class wherein the seats determination towards the centre and the Centre Armrest collapses to prevention the rider from Side Impact). With specified analyzable systems involved, I petition knowledgeable members of this forum to propulsion airy connected the pursuing aspects :

1) Should a proprietor of these hi-end Cars instal Seat Covers, much peculiarly successful presumption of the information that astir OEMs bash not supply Seat Cover options arsenic further accessories ?

2) If the reply to question No.1 is successful the affirmative then, which benignant of Covers are advisable arsenic determination are Custom Fit Options arsenic good arsenic Universal Fit options. The contented with astir Custom Fits is that they necessitate removal of seats for installation which is not astatine each advisable successful Cars with specified analyzable information systems successful place.

3) If the reply to question No.1 is successful the negative, past what are the options disposable to support and regularly cleanable costly Genuine Leather ( for illustration Nappa Leather ) seats. There are immoderate Detailing outlets doing Ceramic Coating connected the seats nevertheless arsenic Genuine leather is mostly porous, doing Ceramic Coating makes the Leather hard implicit time.

Thank you .