Handy tip by the always-insightful Ensign over at GWGuru
At 12 spec, "Go for the Eyes!" is worth (on average) 14 damage on a sword, 19 damage on a bow or spear, 24 damage on an axe or hammer, and 36 damage on a scythe.
If you have four physicals on your team with random weapons, the skill is worth around 80 damage as a minimum, and it could be worth over 100 per use with Scythers. That damage gets compressed into a spike as well. The skill is really good, no question - who doesn't want to spend 4 adrenaline for 90 damage a shot?