Have they done anything about their junk clips?

Nope still junk just had mine snap a week or two ago, I wrote a a review and posted pictures of the broken clasp, my dog is a 100 pound German Shepard, it snapped and he took off lucky for me he ran right to a neighbor and they distracted him long enough for me to get a different leash from my house.

Does the leash end metal clip swivel?

Hello, thank you for your attention to our shop. The leash end metal clip can be swiveled. Have a nice day !

With thia work on a 120lb rot?

I have two rottweilers, 130lbs and 100lbs and the leash works well. The bungee has some give so if they are a puller you will feel the give. My dogs do well on the leash but when my male was a puppy he would try to pull away but no issues with utilizing this leash to correct his behavior.

Is it ok to use this leash with a regular collar instead of a harness?

This is my first review of any product or service throughout my entire life. That is how disgusted I am. Excellent, Elite??? This company needs a dictionary or I can help them out right here. "a select group that is superior in terms of ability or qualities to the rest of a group or society." "the elite of Britain's armed forces" We have a German Shepherd Belgian Malinois mix he is very disciplined does not even tug or pull the leash. He is highly trained. It would be best to describe our dog as excellent or Elite, but I'm not really sure if this company knows what that means. So I will say highly efficient, reliable, honorable and dependable. The clip broke simply while pulling it off the collar clip. We have a highly efficient, reliable, honorable and dependable Ray Allen collar made in the USA that can pick up a cement truck. Live and learn I suppose. We do have military experience, search and rescue, which includes Avalanche rescue and to any veterans, law enforcement or service members looking to purchase this for their furry family member, do not do it!