A clumsy friend of mine dropped my Surface Pen on the floor... Pens usually fall with the pointy end down. I am wondering, how sturdy are these pens? The pen did not work when I tried to touch the screen after the fall. I opened it and took the battery away and put the battery back. Then the Pen worked. But from the view of the "penholder" thing (the thing where you put the pen on the cover type) the nib seems sligtly curved now. Are the nibs slighlty curved or dead on straight? Just wondering if I should order a new pen or just extra nibs or if the pen is like this? Edit: Can't anyway try to have a look on their nibs on their pens? I am bit worried here.