No, no it would not. There is no requirement that a pair of Identical Strangers switch at any point, which means that if they do, it's a trope.
There is no Planet B
Trope Identical Stranger can be played with great variety and the switch is by no means a requirement. It can be that they just meet or that people confuse them, or keep mistaking one for another. In some stories, a dopplegänger can steal his lookalike identity. Or in William Wilson by Poe, the similarity is just played for creepiness.
Also, I've just noticed that we have a trope Prince and Pauper which I think should be added into Lakija's suggested description (instead of direct reference to Twain's work).
edited 27th Jun '14 1:09:28 PM by XFllo
Hi
Clock is set.
There is no Planet B
I think we could swap the current description with Lakija's new write-up.
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Hi
Agreed; make it so.
Swap is in.
"For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled." - Richard Feynman
Hi
Looks good; I made a coupla tweaks. Locking up.
Twin Switch requires twins because every example of Identical Stranger would have a switch.