Zelandakh, on 2012-March-19, 03:13, said:
I think it is a good idea to answer the OP's question. With a random (intermediate) partner the default agreement is penalty. You can disagree with this as much as you like but this is the simple truth. The OP went on to ask about other agreements. This means it is also right to answer that there are good reasons to play it differently and/or that most experts play it differently. The vast majority of top players also play some form of Smith, unusual over unusual, and many other things. That does not make these standard for most (lower-level) bridge players either.
Even my dad plays this as t/o, and he is over 70.
If I sat down opposite a random club player, as I sometimes do in league matches for my local club, I would assume it would be t/o. So far no one has thought otherwise.