For manufacturers on assembly line, if something is not user serviceable, yes, it is OK to use anything, from Torx to Pentalobe to something even more exotic.

For manufacturers on assembly line, if something is not user serviceable, yes, it is OK to use anything, from Torx to Pentalobe to something even more exotic. But if I ever need to service something, I want it to be accessible; I want somebody at least think about it for once. My favorite screw drive type is hybrid Slotted/Philips screw. If it is large enough to be unscrewed by a coin and somebody have thought about it too -- even better.