Signet of Strength not stacking ?

I'm not sure if this is a bug or if there is something I don't understand... If Signet of Strength and Conjure Lightning are both active at the same time, do the effects stack ? If I use one of the two, I will see two damage number popup on screen, one for the weapon damage and one for the added effect.

However, when I use both skills, I don't see 3 damage number as I think I should. I only see the weapon damage and the damage for the last skill that have been activated. Is that normal ? Can someone confirm ?

I think it adds damage onto the attack itself, not apart from it. The damage could be armor ignoring but still included in the attack, like power attack etc.

^^^What he says is true. It doesnt say like -24 -5 signet of strength. instead it will say -29

Anyone know if the +5 damage is armor ignoring?

I've been contemplating adding this skill to my skill bar, but I'm not convinced it's worth it in my particular build.
My build has 10 attribute points in strength, which gives you 11 swings of +5 damage (if I recall correctly). That's +55 damage per 45 seconds.
Hmmm, like I said, I think I might be better off just adding another attack skill.

Anyone use this skill and have any feedback for us?

Doesnt the +5 effect all attacks, even skills? So you could do eviscerate with +5 on top of it? Now, if you had an orders necro, conjure whatever, and this signet that would be some nice damage. Maybe a smiting monk with strength of honor too. It cant be armor ignoring though.

i think you get like 12 hits at high strength, thats a total of ~60 bonus damage thats incremented over time with 45 sec cool down
id say you are better off using another attack skill which should add up to more damage in the same increment of period of time