Thanks for the replies. My concern for walking Shylah is that if I'm on the road, I want her to be aware and prepared for threats. It is not exactly safe for either of us to let our guard down ever. From what I have seen when protection mode kicks in is a lot of neck strain. Because both Twilight and Shylah are serious about protecting, they strain, lunge, claw the ground, and growl (the angrier they are, the less they bark). With a collar they usually end up choking, although that doesn't stop them, and come away coughing a little. For this reason I got a harness for them, but I do think it is the to cause a strain. Shylah is leash receptive, but since I tend to want her wanting to work, hunt, and range, I haven't concentrated on loose leash walking. Perhaps I should, but I only wanted her receptive to leash movement, which usually a small tug and a change in direction from me accomplishs that.
Oh, I usually will hold them around the chest when they go into attack mode to cut down on collar pressure.
Lastly, Shylah has developed a lump/abscess on her neck (possibly from her injection or an insect bite) which caused me to remove her collar for the time being. Antibiotics are not preferable as she has already been on one type for a month, and another for a week before that. It will probably need to be drained at the vet's, but I just came down with something. Reminds me of dengue, but I'm not sure going to the vet with "covid like" symptoms is going to work. And Shylah cannot go without me as I'm the only one she really trusts in this situation. It would be very damaging for all my work with her. Anyway, I wanted to see about harnesses for this purpose as well.