When I did Tetonia I stayed on the right side of the arete the whole way and never touched the crux on Le Teton. I joined Le Teton after it's crux on the arete. I felt is was 5.10 and pumpy. The crux for me was where the arete points out when you are climbing left of Le Tetons crux. Really cool. Do most people join with Le Teton at its crack?