Well I thought I could make your day, but the 8 speed options in Cyclotourism cassettes are no longer offered at Harris.

They have a great looking cyclotourism cassette in 9 speed, and they have a cheapish standard 29er cassette that is 12-36, HG31. I think that would work great with a triple on my 9 speed. In fact it comes in two versions with a 12 or 11 high gear. The latter would be best for a double I suppose? There are some nice options really cheap for 7 speed, which is currently what I am riding in freewheel config. But I don't see myself getting a 7 speed cassette rig any time soon.