It does seem rather bizarre that Labour announced this without preparing a good answer for the most obvious questions.

I also see the Tory front bench is still pretty much avoiding the issue and letting Rees mogg and co foam at the mouth of their behalf.

I wonder whether at some point, with labour struggling to coherently defend, the Tories begin to see this as a workable attack line.

I didn't see the Sunday segments but the summaries I saw tended to imply that this week's Tory rep was not pressed on the sue gray thing, which seems remarkable considering the hoo-ha that their back benches are making of it. Implies to me that they didn't really want to discuss it/they haven't decided which way to go yet.