I dunno about inconspicuous, if I'm playing a decent opponent and he hangs his queen out there like that, I'm gonna assume it wasn't a blunder, and be sure to take a closer look at what's about to happen.  Plus, what if White plays 2. Qb3 in response? Could still guard d1 that way it seems, though I didn't look deep into any of the lines to see what eventually comes of it.

I dunno about inconspicuous, if I'm playing a decent opponent and he hangs his queen out there like that, I'm gonna assume it wasn't a blunder, and be sure to take a closer look at what's about to happen.  Plus, what if White plays 2. Qb3 in response? Could still guard d1 that way it seems, though I didn't look deep into any of the lines to see what eventually comes of it.