Thanks, good to hear!
Here you can see the two original pictures, as well as the layer mask:
The method I use for combining the pictures is fairly quick and straightforward, and gives a lot of control:
I open the two pictures in photoshop, copy and paste the sharp one as a layer on top of the blurry one. (If you were shooting on a tripod the pictures will align perfectly, otherwise you may have to move the layer around a bit until they match).
Create a layer mask. Paint it black (zero opacity).
Using the ordinary airbrush tool I paint in the parts that I want sharp.
A special thanks to you again a1ex for implementing this feature!