"Switch view mode" fails when using the "Reset" layout

This is small - now I've found it... possibly just docs

Steps to reproduce.
* Edit a content type, add a new "View mode" ("Compact")
* Enable "View mode switcher" in DS Extras /admin/structure/ds/list/extras
* in both full view mode and compact view mode for the content type:
* * switch the layout to "Reset" - I *need* a DS layout active in order to :
* * move the "Switch view mode" field up into the content area to display
* * configure the widget to provide a link to the other view mode.

= Result:
The full page mode shows a link to the 'Compact' mode but the switch view mode link does nothing

= Solution:
Use "One Column" layout wrapper instead of "Reset"

= Explanation?
Looks like the javascript is unable to find the 'wrapper' element when using a "Reset" layout

Maybe this is just a documentation thing, it was certainly a gotcha.
The only reason I went for "reset" layout was because I didn't feel the need to use DS layouts at all on my default page, and "Reset" looked more lightweight than "One column".
Could we have a "default" layout instead? or bring the ds_view_mode_switcher into normal extra_fields management so we ca use it even when DS does not own the page?