I read an archive thread about the "Shawn Williams" guard, and one of the staple moves from there was said to the be the reverse triangle. Now, a BOLT lock is what seemed to make sense to me from there--and I could see that being called a reverse triangle.
The ILGrappler lock is NOT a reverse triangle. The setups are different. I don't know how the setups are different, since they are the same, but the ILGrappler lock definitely ends up in a neck crank. It's genious!