Using foam boards instead of standard vent chutes on rafters

Just like to get some thoughts on this product....(ignoring price)......using this in addition to the normal fiberglass bascially this clip-vent system would just replace those
standard vent chutes...using this with the standard 1" DOW Blue Styrofoam.,... (located in the Houston area) So there's basically 2-3 inches between the foam board and attic decking...
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