In reply to baileyswalk:
Csn't comment on a two day attempt, but when I did it in June, I had a pair of 5:10 Insights (cheap off a well known auction site!) and found them to be superb, not only for the technical pitches but also for descending on steeping rock.
My partner however was in pretty big walking boots and didn't have too much trouble, but couldn't say how he felt of the technical stuff.
I would say though that a pair of approach shoes are a very good investment either way!
Best of luck.... just take plenty of water!