Peanut butter sandwich made with jam

How do you feel about the PB&J spreader? Unclutterer regularly makes fun of "unitaskers" and some of the commenters on this one got a little fired up. Apparently there is room in the market for a PB&J spreader, even one that looks like a pregnancy test.
Due to popular demand, I am here to share with you my PB&J technique so that you no longer need either cross-contaminate jars nor use two knives: spread the jam on slice #1, wipe the knife clean on slice #2, then spread the peanut butter on slice #2. Also, I lied about the popular demand part.