Painting with a brick can feel really good
Still, I’ve been using (not very often: only when I don’t have a brick at hand…) and also lending my little graphire for more than seven years now, and it still works. Just make sure you treat it respectfully, store it in a dry place, don’t lose the special pen (I attach it to the tablet when not in use).
Of course it is most usfull for texture painting, sculpting, I also recently used it at skinning time to weight paint bones influences.
After helping somone else to use it recenty, I confirm that some people might have more difficulties than others to watch the monitor instead of their hands while drawing. But she managed to get very good results in the end.
To solve the issue about grabing objects there is a new option in the preference window: “Drag Immediately”