Tetonia is a good line if you are comfortable with 5.10 and some runout with less than great gear. Not a good suggestion for someone where well protected solid 5.9 is a challenge.
I never felt like it was 5.10 climbing, no move seemed harder than the le teton crux above it. But you're right about the gear, it is a little spicy - clean falls though.
Seems like there is more honest climbing on tetonia compared to Le Teton, which is easy rock up to a few moves of 5.9.