In reply to hoppojoe7:
The Walker has been climbed a fair bit this summer in very dry condition (ie. rockshoes all the way), but rockfall was an increasing danger as temps increased in July, and there was at least one accident due to this. The Jorasses is looking much whiter at the moment after thunderstorms in the more recent cooler temps.
In a good year (like last year), September is the start of 'Jorasses season' when all the non-rock routes (ie. everything except the Walker) see a lot of action. Next month could still-dry conditions on the Walker, in which case it will be in 'easy' nick, ie. about 40 pitches of climbing up to E1, but still with possible rockfall danger. Or it could be snowy/icy, which will make it safer, but with much harder climbing. The latter is more likely. I would suggest that the Walker these days is best done mid-summer in a dry year, and the other routes on the face are a much better option when the face has early autumn neve (like the Croz, which is a better route IMO).
In standard (dry) conditions, take plenty of quickdraws, maybe 12. The Walker is festooned with pegs. Take a few cams and wires in addition, but don't overdo it. Definitely a one-axe route in dry nick, definitely two technical tools if it's looking white next month.