I've never owned one, but I wouldn't mind it because my wife is ALWAYS on the boat with me. I kinda like it that way.
If you need to get lines or anything with your cousin, or anyone else in that seat, make them get it, or make them move.
Just my opinion, and that may be changed if I owned a boat set up that way.
It seems like it would make for a nicer cabin layout - but unsure of weight distribution through the boat.