Risks of dyno testing?

I have an opportunity to receive some non-engine related performance parts in exchange for the use of my truck for before and after testing including dyno runs. It sounds great but if anything breaks on the truck in the course of testing I'd be responsible for it, not the shop. I think the chance of something happening is small but it's definitely not zero.

I'm wondering what you guys think? Worth it or too much risk?

Thanks!