Hi, I'm currently a Lightroom user with a 13k photo library. I'm planning to make a special family photo album (parents 60th birthday) - and thus Apertures faces tagging and book making abilities are very interesting to me. However, I'm not sure right now that I want to transition 100% over to aperture. Can I run both at the same time, using referenced files to access and view the same photos? Will I cause problems doing this? (I realise that edits wont carry over - not an issue here) Thanks!