Ah the joy's of being a Northern DJ.
Depending on the night have been known to carry a 7" box, a 12"/album box & a CD box (all original format of course!) but that's the Modern scene for you.
Only ever knackered 1 record by backcueing but it was a very rare acetate so lesson learned on that score.
Have never known a 12" single get cueburn so guess there are some advantages
He'll kill you Simon
Off to meet him in a bit at the Wakefield dayer. He's already there propping up a bar & it don't start for another hour