I'm actually using Jesse James buttons for my AKL pieces too. (I order from www.shellysbuttonsandmore.com) and they do have shanks. I use a wire cutter to snip them off. It's too hard with scissors -they are too thick, but the wire cutter pops them right off.
Well -- would it too much repetition for me to use them too? I haven't ordered them yet.
And does the whole shank come off so that the back is flat, or are you left with trying to adhere a kind of bumpy object?