I, like you, have the full range except for the Bond which I intend to get next time I order from OKW. But I have the WW2 version, which has the string/shoelace.I too have the full range of Outdoor Knitwear Woolly Pullys - including the "Bond". My go to is the Army as well.
The one I wear most often is a MoD surplus Jersey Man's Heavy Olive Roundneck manufactured by Kempton. The former owner cut a small hole at the front inside neck and snaked around a black shoelace in the channel. As it ties on the inside there is no danger of it popping out and getting entangled in some machinery. Rather clever!