Hardiness of the AlBook/TiBook replacement

[c.buttimer at mdx.ac.uk]

Dear owners of AlBooks,

Being an owner of the rather delicate TiBook, I was wondering whether any of
you had yet had reason to be grateful for the toughness of their aluminium
casing? In other words - are they as durable as might be hoped for?

And a second more generally directed question - will Apple continue to
manufacture the 15" TiBook for much longer or is it likely to be recased to
be more consistent with its larger and smaller siblings?

Many thanks for any insights given,

Colin.