Automotive bedliner - like herculiner, etc. is great for just that, BOV use. I wouldn't think it would benefit a BOB any way.
The fundamental reasons why those spray or roll on coatings are used, are varied. Mostly, it is because it's a good layer to prevent scratches and general wear and tear. It's a durable finish, and very tough. Works well in cargo areas, like truck beds.
Another benefit is that once it has cured, bedliner slows water from getting into places that it shouldn't... and thus causing long-term damage. IE In older vehicles, rust is a killer and once it gets going, it's hard to stop... so long as moisture can get in. Here is a good, and true story for ya.
About 7 years ago, in my place of work... one of the talking heads decided that we were to roll on some "better brand bedliner" over the tiles, in front of a particular fixture. The thought at the time, I guess... I don't know, I didn't make that decision. So I wrote off a can, and myself and my subordinate taped off the tile, and spent the next 20 minutes (give or take) rolling the bedliner on. We had about two coats of it before we started feeling a little funny. The next two coats, we had to open all the doors and put some fans in strategic places. Noxious fumes anyone?
Since then, those very tiles have been subject to all kinds of harsh floor stripper 3 times a year, and have had numerous large automotive and fleet sized batteries dropped onto them with no ill effect save a scratch. I don't even want to think how much sulfuric acid was spilled in the span of those years, or why that bedliner has held up as good as it has. I truly think it had melted into the tile, and became one.
So, no. I wouldn't put it on a pack. But if you must... try it if want to go for it.
I'm curious to see the end result, I'm not sure that it will work well with nylon.
I know, TLDR-