In reply to An Triubhas:
> In order to be a successful mountaineer and tackle peaks in the great ranges is it important to be pushing the e grades?
Depends on your definition of successful mountaineer and which peaks you wish to tackle.
>
> For example is someone like Kenton Cool or Alan Hinkes that good at rock climbing?
Compared to Dave Macleod, probably not. Compared to your average climber then yes. I would suspect that the majority of top UK mountaineers are operating at E2 minimum and much higher in many cases e.g. Nick Bullock, Andy Cave etc...