1000 mile socks

We're gambling on having a full team and have started getting things organised.

We have ordered some 1000 mile socks. Apparently you can walk 1000 miles in them and are guaranteed not to get a blister. Given that we probably will be walking that far in the next 5 months we decided they would be a good investment. This weekend we will be trying them out... will they take us 15 miles without blisters?