I've been fighting a leak in my cage's tire the past two weeks that leaks VERY slowly, and here's what I've learned about holes in tires:
1) Always, always, always get it plugged AND patched, if you're not going to fit a new tire.
2) Do the work yourself or have it done at a QUALITY location.
3) Sidewall holes ends the life of any tire.
4) Any liquid put into the tire that "instantly fixes flats" will cost you more to have removed when you get your tire replaced (assuming you don't do it yourself).
#4 is true, at least, in my neck of the woods. I will guess that fuster might not experience that, or he wouldn't be using whatever that solution is, or he thinks the $ trade-off is worth it (and it might be!).
Dragging knee is for the track, and dragging tail is for the lot. --Kane Friesen
When you're in a car, you're watching a movie; when you're on a bike, you're in the movie. --Robert Pirsig
Identity theft is not Fun