Thanks for the clarification - in MS Word it appears to be possible to embed it directly. It does appear aliased on screen, but it's obviously using the vector data as it seems to be arbitrarily resizable and zoomable, and when saving to a PDF it's clearly not just embedding bitmap data as the output is fully zoomable and antialiased.
My experience of vector graphics in the day-to-day office world (ie. amongst non-FOSS people for whom that's not their job, but might come up as part of it) is that there are two vector formats that exist: EPS and AI. Since MS Word appears to work with EPS pretty well, it would be very useful if LO did too.