ARB Tire Repair Kit?

I’m planning a week long trip into Appalachia this spring. There’s lot of unmaintained gravel & dirt roads/paths in western NC & that side of Tennessee with access to wild trout for fly fishing. I’m thinking one of these ARB tire repair kits & a compressor is a good bet, but is the repair kit any good? Anyone used one? Are the repairs permanent or only temporary?
 

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