The chime due to the driver's belt being unfastened was never a problem for me; my belt is always buckled.
But when my Significant Other is riding shotgun, well..
I disabled the chime this morning, and then I picked her up at the hairdresser (er, 'salon') and we went on an adventure through southern Vermont.. we went maybe ten miles and she said "Hey! the seatbelt bell isn't ringing!" "Yeah, I disabled it..."
And then she put on her seatbelt
BTW, yet another awesome roadtrip in the WK2.. "lovin' every minute of it"