I received my Household to 1/4 mini today, Plugged it and bam! I got remote triggering of the 622! Dam shame that its not ettl.... I had old 522's with the ttl shoe attachment and used them with my old Canon F-1 and they worked great. Now the fun begins! Hopefully i can use the 622 as key on a flex5, and the 580ex as flll on a flex5....