I am very tempted by the Guides Pack, but I am wondering how protected the main compartment is from the elements.

Long ago I had a similar pack which had an extendable snow or spindrift collar. It really protected the main compartment, and allowed modest expansion of the capacity.

Anyone care to share their experiences wirh the Guides Pack in bad weather?

Any plans to come out with a MK II GP, with a spindrift collar and maybe an optional padded belt?