Rob,
I think one set would be interesting if the weather changes, but it would be the same for everyone!
It is only sensible to control the rear tyres as many people 'tune' the front tyres to the varying track condions, especially in 2wd.
I would love to give it a go.
From a NE point of view, I know a lot of the regular A main guys run there old tyres from the Nationals, so they perhaps don't have a huge layout anyway.
G