Leo DoT Mod Question

Anyone test how effective it is with some DoTs like Fire Trap, Viper Strike, Poison Arrow, etc?

I'm curious to see if it would be viable to have a dual wielding trapper, or perhaps a Viper Striker, that uses this mod extensively. That way, if whatever normal damage component doesn't destroy enemies, a rather nasty unavoidable DoT will.

It's a prefix, so really, is it a worthy mod? Or is it crap? Gotta know these things before investing in a +3 with a prefix free for that mod.