Either one is a perfectly workable solution for me. It's the cheese that does it for me mostly. On a side note, this reminded me of the greatest sandwhich I ever made: Grilled cheese, with bacon, sriracha and garlic, cooked in the bacon grease. Oooh, just the memory stops up my arteries!
There was a time when I used to save bacon grease specifically to cook grilled cheeses and eggs. What glorious days those were. I got out of the habit because it grossed my house mattress out. Now I live with a vegetarian so its even worse. These days I only get to enjoy bacon grease delicasies when I visit my relatives in NC.
You have a house mattress? Is that like a mattress that just walks around, letting you sleep on it when the moment strikes you? Cause that'd be sweet, hook me up man! Joking aside, I know that feeling man. I've gotten out of the habit of eating bacon (or really any hot food) over this past school year. I kinda miss it :(