As the others have said, yes, it casts a lot farther. I tend to use while fishing #3 spinners and smaller spoons in the Vedder Canal, and it's been very good. Dan Gave some very good points.
Like Shinny, I had problems with the mono leader breaking at the junction. I tried different knots- double uni, Albright, and others. Probably my fault. I worked on the FG knot, and, if tied properly, it hasn't let me down yet. Just keep tightening it up as you do the wraps, especially before the half hitches. That being said, Rod Toth doesn't use mono at all when guiding, and his guests seem to do pretty well.
Also, I usually use mono or braid backing on my spinning reel to take up some of the spool space and use the good braid as a top shot- usually about 20 yards more than I can cast. Braid lasts longer as it isn't affected by the elements as much as mono. You'll also have to loosen the drag a bit more. Give it a try.