I have the Joystick on my 190. It came with the boat from the PO. I like the tower although I would would have like to have it mounted a little further forward on my boat, to line up with the windshield.
I would never try and turn my 190 into a wake boat but when you spend all day on the water with a young family the tower is invaluable!!!!! The 190 is a small boat and having that extra bit of room when towing the little ones on the tube is great. Also for training purposes for new boarders it is a huge help in my opinion.
I say go for it!!!!!