more pics of the 2 way jacket i posted about on the previous page:
jacket portion folds out of pouch in the back:

and then you can wear the jacket over the vest or underneath it:

kind of neat! I imagine that if you wear it over the vest, you can clip the neck loop and then wear the vest with the jacket hanging off the back.
I'm bummed that Uniqlo U only comes in sizes S-L. I've been more interested in sizing my jackets larger lately.