I looked over those recipes, and mine is a little different, but similar. I salt and pepper a chuck roast and sprinkle it with powdered G.S. Zesty Italian dressing mix. One packet is enough for an average (2-3 lb) chuck roast. Put it in the crock pot with a can of beer...any kind...and cook on low until tender. Check seasoning and add whatever is needed...more S&P, garlic, oregano, whatever.
You can shred the meat with two forks if you like it that way, or slice it with a knife. Either way, let it simmer a little while to soak up the seasonings.
I serve it with pepperoncini on the side, but some people (my son-in-law), pour the juice from the jar directly into the pot with the beef.
Serve it on a hoagie bun. You may dip the cut side of the bun in the juice if you like, or serve extra juice on the side in a small bowl.
Personally (and this is where I deviate from the norm), I like mustard on my bun. But then, I like mustard on my BBQ, also.
We get by with a little help from our friends