Mark Radcliffe played the Manics track last night. You can listen on the bbc player thing. they start talking a bit about the buns about 1:21:30 in. Sounds like manics with Mac on, if you know what I mean. Or alternatively mac with manics on.
http://www.bbc.co.uk/iplayer/episode/b00th9jn/The_Radcliffe_and_Maconie_Show_24_08_2010/
Theres some chit chat after too about the session. e.g. mac to james dean b when preparing for the duet - its OK, i'll be the boy, you be the girl
Not that this is the best thing in the world but I reckon, following that rumour the other year, for his next solo, a bunch of collaborations could be good.
Chez