The Rannoch hose listed in the first link are Made by House of Cheviot and I believe available from several kilt vendors, I believe even STM (although I could be mistaken withthis one) as their Lewis Hose. They can also be found at a very reasonble price at the below website:

http://www.bagpipecovers.com/hose.html

listed as their "superior hose".

Same place also has a decent price for Hawick Socks House of Cheviot tartan hose in limited color schemes.