Conclusion:
Do the DELOS platforms work? Definitely. The smallest and slightest of these platforms worked extreemly well indeed, lowering noise and opening up the midrange to tremendous effect.
What surprised me, though, was just how much better was the larger unit performance. If your able, go for more: more wood, more feet. Whatever you choose, though, the DELOS support system is a valuable addition to an anti-noise toolkit.