That must've been special Stuart. I'd think the RCH is less than 2,000 capacity. It's a great venue. Like you, I thought the Hyrdo was too big, given they played the Auditorium for the Intriguer tour. To jump from 3,000 to 10-12,000 seemed optimistic. Even more so with the prices, but it shows what I know!
I'll pick up tickets for Glasgow if (when) Manchester is cancelled. I'll be in the £40-75 seats if that's the case. We were within 10 or 15 rows at the SECC (TOE) and Auditorium (Intriguer), so it will be disappointing to be quite far back, but better to be there than not!