Bruce
TVWBB 2-Star Olympian
advantages I can think of might be they are easier to deal with in divided format. Some people like to drop them in the dish washer or just handling them. But, on a Q1xx grill, they just are not very big even in a single grate format. In fact, when I bought my stainless steel grates for my Q220, I welded the two halves together rather than deal with the clips.

