Black Forest Ham and Gruyère Panini

OK, OK, OK, it's not really Black Forest ham, I couldn't find any of that, it's just regular deli ham. Proper Black Forest ham (with capital letters) - from the Schwarzwald region in Germany - is cured with a myriad of spices for one to three months. Albanian ham - from the Clifton Park region of New York state - is sold pre-packaged as lunch meat. Anyway, what's with this cookbook's fascination with Gruyère?
Oh, yeah, so... I bought a panini grill. A friend of mine clued me in to a great deal (she stays up late looking for sales on cooking equipment, apparently) and so I thought I'd indulge. Paninis and panini grills have been trendy this past year, but paninis are actually quite delicious and, if you can convince yourself, rather healthy. Alright, before you grammarians start complaining, I know "paninis" is a catachresis, but you're just going to have to deal. "Panino" is the singular and "panini" is the plural; I'm not saying panino.
So back to the sandwich... Between the (rather large) pieces of Italian bread, we've got a spread of Gorgonzola, caramelized onion, Albanian ham, and sliced Gruyère. When we afixed the Gruyère atop the turkey burgers of a weekend prior, we found that this cheese is simply too hard to melt in such a format. In between hot grill presses, it melted fantastically and was absolutely delicious. As the top and bottom of the bread was buttered for this panino (sigh), the grill left absolutely gorgeous marks upon each. Seven minutes, as the recipe commands, is simply too long for such bread (soft, but not crusty). Five would work fine, though maybe it would vary if you used a more gourmet roll (pro tip: pick up some from Panera on your drive home).
And now for the recipe, which serves four (please don't sue me). Adjust your quantities as per your guests:

• 2 red onions
• 1 tablespoon of chopped, fresh tarragon (if you choose)
  
• 1 tablespoon of chopped, fresh flat-leaf parsley (if you choose)
• 4 tablespoons of crumbled Gorgonzola cheese, softened
• 4 crusty (curmudgeonly?) Italian rolls, sliced horizontally
• 1 pound of Black Forest (or Albanian) ham, thinly sliced
• 8 slices Gruyère cheese
• misc. quantities of butter, sugar, salt, and pepper as detailed below
  

We'll want to caramelize the onions first, so melt 2 tablespoons of butter into a cast-iron (or non-stick) skillet over medium-high heat. Cook the sliced onions for two minutes, then reduce heat to low and season with 1 teaspoon of sugar, 1/2 teaspoon of salt and 1/2 teaspoon of ground black pepper. Sauté for another 20 minutes, stirring occasionally. Once removed from heat, you can toss the onions with the tarragon and parsley. Butter both sides of your crusty Italian loaf (that was fun to type) and then combine 2 tablespoons of softened butter with the 2 tablespoons of softened Gorgonzola. Spread the Gorgonzola on the insides of the rolls, layer with the caramlized onion, the ham, and then two slices of Gruyère each. Grill these sandwiches in the panini grill for five to seven minutes and then eat while hot.