[I honestly am not sure how the rest of the plate would work, but my guess from what we've seen so far is that it would work, because the reason you can't lash plate is it's investiture, and that if you could touch someone it would work past the plate, unless they're wearing aluminium under the Plate. As to the Stormlight, I think you holding so much, especially at higher ideals, would render my lashings less effective. But, I am also a High Ideal radiant, and so had a lot of light, which is why I used so much in that lashing. I would have to get some more soon though.]