Yeah, that's what I was using, but the overlay that lists abilities in order of overall damage is what I'm missing. Aside from that small complaint, I'm really liking it thus far.
That data as of now is not available in the pop out but is available in the main app Damage Dealt tab. You can also force the main app to be always on top in the settings. This could be a workaround to get this data overlayed during combat.