I mentioned this on another forum, so forgive me if I repeat myself.
I used Cutthroat furled leaders, and liked them. But one day, while listening to the Orvis Fly Fishing Guide podcast, with Tom Rosenbauer, he was answering listener questions. A listener wrote in asking what Tom thought of furled leaders. He said he'd never used them and never fished with anybody who used them, so he wasn't qualified to answer. Now, he's fished with a lot of famous fly fishers, and if none of those folks used furled leaders, I figured there must be something to it. He may have just been playing coy, and wanted to avoid criticizing them, but it's obvious he doesn't use them.