With the Bolt, the clip is an optional accessory that installs on the back of the pen barrel. The unit I have for testing didn't come with the clip, but it's easy to install by using a coin to remove the plain end and screw on the clip end. When using the clip to store the pen upright, this does face the nib toward the ground. I thought that might be an issue since gravity and motion might cause some ink to leak out and stain whatever it's clipped to.
I tried this out by simply carrying the pen around in a pocket with the point faced down. In my testing with normal walking, no ink escaped from the pen, and the nib was clean when I got it out to write. My assumption is that some leakage could still occur depending on the environment and the level of movement you put the pen through. I would certainly be careful about flying with this pen due to the large air pressure change. Either empty the pen before flying or isolate it in a bag to prevent some inky mishaps in your luggage. Overall, though, I really appreciate the clip placement on the Bolt, and I like the optional nature of the clip even more. Even though I don't have a clip to try out, I still think I prefer this pen sans clip. It's more sleek and the bolt mechanism acts as a great stopper to keep the pen from rolling around on flat surfaces when not in use.
Similarly, a fountain pen isn't much use if the tip dries out after a couple of hours while retracted due to a bad seal that lets too much moisture leave the nib and feed. This seems to be the really tricky bit to design and manufacture at scale. Pilot seems to have a good solution, as does Platinum.