In reply to MB4
I've hidden out some canny prolonged rain showers in the overhang at Kyloe and climbed straight after and its been fine on the left hand edge of the crag around the quarry area and the buttress with trinity and st ivel on and it's been fine but i'd imagine tomorrow the further towards the forest you go the greasier it will get and be pretty miserable but the stay at the left hand side of the crag and you might get lucky but as the post above mentions water proof up on your legs for the walk in
If you can brave the chill and elements then Bowden might be a good shout. Dries really quickly
Enjoy whatever you end up doing