What an interesting discussion, i have served on staff for the 21st cent wb a couple of times. Staff have been encouraged to wear the tartan scarf to promote the course - not with the beads or the WB woggle. The taupe scarf is international worn by woodbadgers around the world. In some countries the wb woggle can be worn with other scarves before the full wb regalia is worn. I have particpated in wb in two countries its slightly different in each. Not sure why you cant wear the tartan scarf as long as you dont wear the wb beads and woggle with it. I thought we were always a member of troop 1 Gilwell.
PS I am am a part Scot and think that anyone wearing a tartan with repsect and pride can only enhance its value. I am certain BP would turn in his grave that we make so many rules that serve no useful purpose. Scouting is a game with a purpose.