My Gshock has BT and i'd agree it's not that useful - with the exception of resetting the time when you land somewhere remotely from your phone and impressing the kids. IMO the radiowave feature I have on another G is a much better feature. The BT seems to be a kind of 'lock into the G ecosystem' move rather than something better. That said, a solar G is realistically the only watch you really need.
My Gshock has BT and i'd agree it's not that useful - with the exception of resetting the time when you land somewhere remotely from your phone and impressing the kids. IMO the radiowave feature I have on another G is a much better feature. The BT seems to be a kind of 'lock into the G ecosystem' move rather than something better. That said, a solar G is realistically the only watch you really need.