I use it on my door sills and it works great. Never tried it on a door panel, but it would probably work fine. It peels off fairly easily, but leaves a sticky residue. IMO, I don't think it will look all that great on a door panel, and dirt will stick to the adhesive on the edge of the strip.

__________________
'06 X5 4.8is, TiAg/black, cold weather pkg., comfort seats
'07 750Li, TiAg/black, sport pkg.
'05 Ford F350 silver met./slate gray, Lariat, 6.0 PSD, CC, DRW, FX4