
<Most obedience dogs I have seen seem to be trained using check collars??? >??????? Do you mean chokers or half check collars
Not many of the handlers I know & a lot work ticktr use chokers There are still trainers & handlers who use chokers a local GSD club will not allow the use of haltis or anything else other than a choker as that was they way they were shown how to train. I can think of one of the GSD handler who has always used chokers on their dogs but oddly enough their dogs wore a dead link one when they were in a class I was judging
I haven't used a live link choker for over 30 years I prefer to train heelwork off lead with the dog wearing a normal collar & actually never do any heelwork training on lead at all
I hate chokers & if a handler used one under the ears when I was judging my steward was instructed by me to tell the handler I classed it as a tight lead & they would be marked accordingly
Chokers rightful place is in the dustbin IMHO