Yes, the 1P icon appears and yes, pressing the key combo auto fills and logs me in.
Ah, I appear to have misunderstood what the software is capable of.
Is autofill planned for the near future?
Thanks for the suggestion, Xe997!
It is no replacement for autofill since Quicksilver still requires you to manually invoke it, but perhaps it will come in handy in the mean time for some folks.