GIMP :: Import / Edit Vector Graphics

I've been trying to find out whether gimp can import and edit vector graphics made e.g. with Inkscape as vector graphics and save them as vectorgraphics, for example in pdf. I'm mainly asking this because I need to make some ads for printing and they need to be in good quality and the best way to keep simple graphics in printable quality is to use them in vector graphics. An ad usually requires a background image and for editing those I need gimp. So in the end I need to combine these two elements and when I do it in inkscape I can't practically do anything to the background image, not even crop it properly, if it needs something to be done (It's kind of hard to imagine what the image needs when you don't have the other elements on top of it). To my mind it'd be a lot easier to finish it in gimp where I can do something to the background images, but is it possible?