Number Two summed it up well. The progression of speed elements from short to long is clearly influenced by Charlie, but the tempo component is not and could interfere with the speed progression. The key to Charlie’s approach is a constant emphasis on the interaction of all components. Therefore, just adopting one element of the training (speed) without properly integrating others (tempo) might not produce optimal results.
Your comment about intensive tempo is correct, but what you describe is really a form of special endurance, which is more appropriate for HI days. What do you do between HI workouts? Extensive tempo or some rough alternative.