IO procs vs. incarnate interface procs

Do IO procs and interface procs work the same? Specifically, I read that interface procs have a chance to go off every time damage is done. So on caltrops, for example, this would be very frequent. Do IO damage procs (and the knockdown proc in ragnarok) work the same way? Just wanted to be sure one way or the other before I made some build decisions.

That used to be the case. It was a bug. It has since been fixed. In patch powers and damage-dealing toggles, Interface procs just like an IO - once every 10 seconds.

Keep in mind, though, that the Incarnate effects have much higher odds to trigger at the high tiers. Most IO's are only 20% (33% for purples).

Ok, thanks.