Not sure if that many people know about this, but I just recently downloaded it and discovered that it has some tools that could be pretty useful during a PKRI. It's presumably checked and deemed as a legal/approved client by Mod Jacmob in this video: http://youtu.be/ai8G-288TqU?t=2h53m (at the time linked).
The part that I believe would be useful during a PKRI are the "Orbs" that display your HP / Prayer / Run Energy / Spec:
Here's what it is:
Here's the link:
It is a .jar, which is what makes most people wary about it, but as the first linked video says, it's checked by Jmods.
Edited by Clowd, 23 August 2013 - 01:54 PM.