Sure. The secrets are, first you have to have the right age larvae, and second, you have to limit the number (and spacing) so they don't build clusters of queen cells instead of seperate ones that you can cut free. Jay Smith did another variation of this where he essentially cut strips from the comb with the larve and waxed them (with a paintbrush and melted beeswax) to a top bar and put them in like a cell bar. This is simpler in some ways as it saves making some kind of shim to hold the frame above the box.