Malky, We only had a couple of completely dry days and after emptying the water out of my boots after the first drenching in the Lake District I opted to use some plastic bags for boot liners which definitely helped. I also bought some additional waterproof over garments which kept the very worst at bay. I know now that my 5yr old waterproofs weren't ! Scottish rain semed morning or afternoon - fortunately not all day and once it had finished all signs disappeared very quickly.
Narada, the Scottish trip itself should have been about 500 miles in length, but add in a few detours over the Brecon Beacons, through Snowdonia (Wales), the Lake District (Cumbria), the Yorkshire Dales, round a few Lochs here and there and the mileage soon adds up. My wife actually rode up to Scotland and back on one of my other bikes as she prefers riding to being pillion.
Treated the B5 to a new oil and filter change this morning