Found this DMW-SSTL1 strap on Amazon--price too good to pass up. Just got it today--very nice. I like it better than the GF1 strap and the other neck straps I've tried. Nice match for the Panasonic 1/2 case.
http://www.amazon.com/Panasonic-DMW-SSTL1-Shoulder-Strap-DSLR/dp/B000GBTU2M
http://www.amazon.com/Panasonic-DMW-SSTL1-Shoulder-Strap-DSLR/dp/B000GBTU2M