One of the local bike shops, Cartecay River Bikes in Ellijay, GA, setup a demo day at one of the local trails today. It just so happened that I was cleared to start riding again after breaking my collarbone so I decided today was a good as any to head out to the trails.
The shop owner set me up with a Large Surly Ice Cream Truck Fatbike demo bike. I think he built this one up himself, it had a SRAM X7 2x10 drivetrain, 4.7" wide Bulldozer tires (aired up to 10 psi), carbon wheels, Rockshox Bluto fork.
My take on the fatbike was that it rode more plush than my 100mm FS IP-036. I found myself looking for rocks and roots to ride over. The tires provided so much smoothness to the ride. However, the bike felt heavy and sluggish to pedal and would lose speed rather quickly compared to my 29er. Weight of the bike was at least 32-34 lbs, even with the carbon wheels. The most unnerving part was the downhill handling of the bike, it just wanted to squirm and go in the direction it wanted to go, rather than the direction I wanted. Because of the handling, I decided the cut the demo ride short after only 3 miles. I just didn't feel comfortable riding at higher speeds.
I'm sure if I rode the bike more, and got past my initial issues and learned how to better control the bike with it's odd handling characteristics, I may eventually have more confidence riding it. However, it just wasn't to my liking.
So I've answered the question in my mind and learned that a Fatbike just is not for me. Maybe I will try a 27.5+ or 29+ sometime in the future.