You un Vern need to try it. Also, I as you are both similar in height I suspect you could get a machine that you could both captain / stoke which is an unusual and added bonus.
We have tried it Vern's a crap stoker, he just goes into panic mode and freezes up so I can't turn the pedals at all and we don't go anywhere and we fall off. On the other hand and very surprisingly I'm not bad as a stoker, first set off had an "oh, fcking hell" moment, but as the saddle was rather low I just tapped down and got control of myself. After that "1,2,3, go" and we were off.
You don't need that much stuff to go touring. We managed fine with a pannier each for three and a bit weeks' touring in America, plus personal effects (wallet / phone / toothbrush) in rackpack or barbag, plus sleeping bags bungeed onto the rack.
Depends where you go and what you're doing, last tour we did we each had front and rear panniers and a bar bag, of all the stuff we took the only things we didn't use were spare spokes, locknut tool and chain wrench; all the other spares and tools we took were needed, you don't mention any camping gear, we'd have been kipping in drainage culverts on more than one occasion without ours, also what about cooking kit/food
My brother and his wife went round the world by tandem. I think it's the only way she could have kept up with him. Also, two people one one bike will be faster than two people on two bikes.
For extra luggage space, you can hitch a trailer and still have fewer wheels than two bikes.
Tandem touring makes a lot of sense to me. If only I could persuade my wife...
d.
Mmm hmm, try getting a tandem and trailer on a train/hairyplane
Have you ridden a tandem with a trailer in tow? If so does it affect control much?
Tandemming is downright lunacy to me, but I quite enjoy it.
Minus points -
More difficult to get on trains
More potential for 'mechanicals' - things seem to break/wear out on tandems at at least twice the rate of a solo. And if things are terminal one of you can't ride off to get assistance - you're both stuck.
Less space for luggage
Tandems can be quite unforgiving on bums as you're not getting out of the saddle and the stoker especially gets a lot of jolts from the road. After several days this can become an issue !
Would S+S couplings help with the train thing?
Your mechanicals points are more of an issue, has anybody experienced terminality on a tandem?
Luggage - trailer?
The bum thing is worrying, it was my tender gluteii that did for us on the last tour.