New feature suggestion.
Enable tooltip addition on an internal button (quasar-small-fab) of a FAB button.
Notice the FAB button in the Inbox app (new Gmail).
desktop:

app ios:

Haven't tested yet, but with the new Tooltips on v0.9 this will be possible.
The deadline for this version is this year yet?
Next week.

Next Quasar version will allow injecting a Tooltip. Sample:
<q-small-fab class="secondary" @click.native="toast('alarm')" icon="alarm">
<q-tooltip anchor="center left" self="center right" :offset="[-20, 0]">Alarm</q-tooltip>
</q-small-fab>
Most helpful comment
Next week.