The selectables don't fully behave like real select tags. Here
is what's missing:
Keyboard Entry
When you have focus on a particular selectable you should be
able to select any given option simply by typing it in. This is
extremely useful for long lists of options. You should also be able
to use the up/down arrow keys to navigate the choices. A CSS class
should be added to selectables when focused so they can be styled
accordingly
Tabs & Indexes
With regular selects you can focus on them simply by hitting Tab
in a preceding input. Selectables are skipped right now. Also you
they should respect the tabindex attribute so you can set the
proper flow/order of the form.
Disabling
RIght now Selectables pay no attention to the disabled
attribute
These 3 features would make Selectable's behavior identical to
what people expect when filling out forms. It would also put
Selectable head and shoulders above every other offering as I have
yet to find a framework or plugin to meet these specs.