I`ve used one for fishing deep river swims,on the R Trent & Bristol Avon:- I still prefer my shorter rods for normal stick float/trotting applications...whatever people say they are heavier/more unwieldy than 13/14 ft rods.
I`ve also used it for margin fishing for Tench:Excellent at reaching over lily`s and weed to drop your bait in:- You`ll have to see it to believe the bend in them when you hook a decent fish:- Landing a double figure carp was a hilarious experience!!