Cloth seats?

Sorry to post again, I am not a 308/328 owner yet but will be within a year or two (Not a Walter Mitty honest, just have other time-sinks to complete first). I did search on this too but drew a blank.

Did any 308 or 328 have cloth seats or was leather mandatory? Here in Greenwich at the dealership near the train station I saw their silver 400 has cloth seats - of course my American work buddies laughed at cloth in such a car.

For years I have hated not being able to buy a new BMW here in the US without leather (or -ette which is 99% the same). This is showing my age and nationality (UK), but in my mind sports cars should have a non-slip material where one's butt goes. These days even a base 911 and every Ferrari comes with leather seats - what gives?

Presumably not using leather in a 308/328 would kill resale anyway so I guess this is a mute question.