I am not getting seat covers for my upcoming Altis.
I also did not put seat covers on my Mehran and for the past two years seats are fine and I never needed any cleaning on fabric part. On plastic part simple duster was ok.
I will put seat covers only when original seat covers start to disintegrate or start discoloring. That is the right time for seat covers. Till then enjoy the feel and look of original seats.
I learnt the lesson from my previous car which I bought brand new and put seat covers and those seat covers lasted well till I sold it after 10 years recently. No one who came to see the car asked to remove seat covers to see seat condition.