In reply to An Triubhas:
How do you know that the CMD will be too pedestrian for your companion? I'd have thought it was ideal in that the difficulty/exposure can be varied to suit. Assuming that novice scramblers will find something easy has got plenty of folk into bother over the years.
Ledge Route is not much harder to be honest,
except the often-greasy slab on the first "ledge", which seems to feel quite counter-intuitive and intimidating to novices. I often miss it out by taking the traverse in across the top of Moonlight Gully buttress which gives a more balanced (but quite easy) route. If your pal is fit you could even go on to do the CMD in reverse, which makes a cracking mountain day.