I've been using this 10.5" cast iron griddle at my brother's place, and it is just great.
I keep a #9 cast iron skillet on my stove at almost all times. My brother prefers a cast iron griddle. I can see the attraction.
The griddle is great all the things I do with a skillet, and also serves as a pizza stone. The lack of sidewalls can make grease management a bit more of a chore, however when making pancakes or otherwise looking to get under and flip frying items things become a lot easier. I didn't notice how much angling around and dickery goes into using my skillet.
Eggs over easy are a lot easier to wrangle.
I have a #8 'Chicken Pan' that is essentially a very deep walled skillet (with a self-basting lid) that I use for fried chicken. I could use that for deep frying, and a griddle for everything else... however I'm awfully fond of my skillet.
I have a griddle I picked up at a cast iron flea market ages ago, and never bothered to refinish. My brother has this Lodge item and it is wonderful. It will serve for generations.