I have the swiss card, although I don't carry it every day, if you have a SAK, you probably don't need the swiss card. I think the SAK is more useful. You always give up something for size and portability. It is better than nothing in an emergency, but I would not want to rely on it exclusively. I have had the tool logic in the past, and sold it, because the quality was not up to Victorinox standards in my opinion.