Love, I suspect many players like to write "anyone for doubles?" and don't show up until it's the picks sending time, so I assume they *do* want to play the doubles. I had some problems myself in Toronto with "anyone for doubles? just confirm" and then 15 people confirm doubles with him while he wouldn't show up to choose
I'm still here waiting for the confirmation of somebody, but per your experience if you're saying this, I invite Exponente for doubles!