I´ve always been surprised or astonished what you call unconventional, or stab. Lately I understand and I swear, this is my last answer and I will stop commenting from now on. Its my impression that you approach a piece of music on the basis of ten common dances. I do it exactly the other way round. I hear a track and start sorting my dance vocabulary to meet the atmosphere of that music. So your answer is "unconventional", whereas my answer might be "overstrained". Put in a nutshell, for me the music comes first, and the appropriate steps secondarily. I have additional waltz categories:
Boston waltz,
Mazurian Waltz,
Country Waltz,
Landler, ... and I find, all these sorts comprise highly conventional dance music.