I'm going up onto Cuiliin ridge with a guide to do InPin in a few weeks. I've been up onto the ridge several times and always just wear my fell shoes Mutants or Salomon Speedtrack atm. The guide is saying to wear approach shoes. Is this due to the stiffness of the sole? I find the Mutants pretty stiff and very good for everything. I don't want to shell out more cash. What do you think. I was thinking about taking my Brooks Cascadias or something. Neil