Yep. Still around
Those special barrel fasteners look nice, but to use them, length is critical and with the heads in a blind space there's no assurance the barrels wouldn't turn while you're tightening them, or if you ever have to remove them. I think it's overkill. Substituting aluminum strips for the plastic is a better idea, though the aluminum will eventually corrode.
My strip has been attached 5 years now without needing further attention.
I never got around to installing all stainless screws & fender washers, but I'd still recommend that. I'll also suggest snapping off any remaining 'bullets' from the plastic strip, and installing screws for all of them.

Happy Motoring, Mark

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DrDKW