Yes, the impact strip can be removed.
Adsit Company, Inc. sells them for $139.00. Their part # is 089-2413.
You can also try Phil at Parts Shop. He has a relative who works at a Mercedes service and repair facility that is also a big dismantler of Mercedes and BMW vehicles. The shop is in Anaheim, CA, and Phil might be able to obtain one for you.
2001 E430, Bourdeaux Red, Oyster interior.
1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".