Here I am!
At the moment the production have three hero sonics, two of which I made for the new series. When I was in the studios the other day to my horror the two sonics were super glued shut. This was because Capaldi does not want to flick it like Matt was. I think we saw it in the open position in the first episode but since then I haven't seen it open. The third sonic is one from last series and is not glued shut. They do use the toy version sometimes for shots when it's needs to be thrown, there are a few screen grabs around where this has been proven. It makes sense to use the toy and save damaging the hero props, 99% of people won't notice. I can say though that the toy version of the 10th sonic was never used, mainly because it was the size of my arm. We made a few dummy versions of the 10th which were cast off the original.
Hope this helps.
Now here's to Capaldi having a new sonic!!!!!!!!