Stoker Malkin and I have been OOP for about three years now. We really like how OOP smooths our cadence, and I have the impression (although no data to substantiate it) that we have more power on the mild hills we ride. I also have the impression that the bike is easier to control because the amount of flex is substantially reduced. And, I suppose, we've simply grown accustomed to the feel of OOP and will probably never return to IP. Our combined age is just over 100, we weigh about 325 pounds, and we ride about 2k miles per year for pleasure (i.e. not a competitive bone between us).

We're generally flatlanders and almost never stand. When we do, it's usually one or the other--never both. Once Malkin clips in on the stoker seat, she stays clipped in until we stop for a break or complete the ride. We learned this requirement when working on starts and stops. This creates a slight disadvantage on the start because stoker's power stroke is delayed by 1/4 turn, but we've never been jackrabbits off the start, so it doesn't bother us. This also puts additional responsibility and accountability on captain during intermediate stops (stop signs, traffic lights, etc.), as I have to keep the bike vertical and stable with one foot down. This can be particularly difficult for me after a long ride, so I usually put both feet down if we're going to be stopped for more than a minute. We've hit a pedal once--turning over a speed bump.

Bottom line for this team is that there are simply no appreciable disadvantages for us to ride OOP, only advantages.

Cheers!