Well, I'd like to know just how prevalent lawsuits are in the
experimental market place.

I know just one is all you need, and being prepared will discourage
lawsuits.

But of the people reading who are/were involved in manufacturing/design
for the experimental market, how many of you were sued? What effect
did it have on your business?

My impression is that it does happen, but lawsuits generally speaking
have not been very successful, which matters little if you spend a ton
of money answering and defending.