Great looking problem, not sure if it hasn't actually been done tho... If it's where I'm thinking (behind the pinacle?) I tried it about 15 years ago but there was a small tree stump right under the arete that made going for the pop untennable (in my mind anyways)... Got a funny feeling an Aussie guy called Shannon did it? Simon Jaques (Jaqusie of this parish) will probably know the full deets (if it's what i think it is) as he showed it me all those years back...
Good effort tho...