No, actually, I'm just using the GPS data from photos on the iPhone for other shots already importred into the library from my DSLR taken at teh same time.
I import the DSLR photos and plug the iPhone in, select Places and use the Import GPS from iPhone Photos.
Little update...I am able to import the photos from the iPhone using the Aperture import procedure. The photos do contain the GPS data, but the coordiantes are pretty significallnty off. Not accurate at all.
A work around is to go to the Import window and choose your iPhone. Uncheck Do Not Import Duplicates and then let all the photos load just in the import window. Click Cancel. Then go back to Places > GPS > Import GPS from iPhone and it should work. (I have a lot of photos and still got the spinning beachball for a bit initially but then all the photos appeared.)