Scott:
I recall hearing Ted Ernst (Manhattan Beach) say a few years ago that the hollow pin Regina chains wore out rather quickly. I don't have any other info. It all depends on what you want to use it for. It does look nice and it is light(er). I also recall that there are a few solid pins to enable attachment with a standard chain tool.
regards,
Andrew Gillis (warm in Long Beach, nice Pasadena vintage ride today!)