But, I suspect Rebuke Outsider would fall into the same category. Especially since an analogous ability is an epic feat. So, you'd just be hoping for the DM to miss it, which is bad form.
Dire Charge is also an Epic feat, and it's strictly worse than Lion Totem Barb which is available at level 1.
Blinding Speed, Combat Archery, Energy Resistance, Epic Speed, Fast Healing, Incite Rage, Legendary Leaper, Perfect Health, Polyglot, Ruinous Rage, and Spontaneous Domain Access all are Epic feats that give you things you could have had at much lower levels.