However, they did not mention anything related to this issue.
My own Eos is in Taiwan, Kaohsiung, however, haven't got chance to drive it.
I am not really sure if it is necessary to have it, but, if the appearance of your car really matter to you (and this is the reason that you are buying EOS)
So just do it. it's only 600USD, isn't it? Because I believe that it might cost more if you want to repaire or do further maintance in the future..
All above is my own view