Permatex is a VERY good company. They are the same guys that make Loctite, and other such glues, and anti-seeze, or thread locking fluids.
I used to work for place that stocked almost everything they had. They make a very fine product indeed.
I actually picked up a repair kit for fixing the vinyl on my trucks rear seat. I have yet to use it, but I have seen it used on other peoples seats, and as long as you follow instructions, and do a good job of it, the end product isn't bad.
Granted whenever I've seen the finished product the person who did it, did a crappy job. But it'll hold up for a looooonnnng time.