The teardrop shape of the ruler is helpful when using it as a straightedge, and also creates a lot of visual interest when it's laying on your desk. The aesthetic design of this instrument is very pleasing, and I'm sure it will catch the eyes of your coworkers quite often. It's certainly a conversation piece.
Unfortunately, the topics of conversation might lean toward the negative depending on how you view the writing capabilities of this pen along with the overall fit and finish of the entire thing.
The pen can be somewhat uncomfortable to write with, but this is really a personal preference. I didn't like the Pen Type-A for this same reason. I prefer a tapered, conical grip/tip for my pens, not a sudden drop from one large diameter to a much smaller one.
But, my number one complaint with this pen, and the overall reason why I can't recommend it, is the amount of wobble and looseness present when you "cap" the pen into the ruler casing. It uses magnets to secure the two pieces together, and they just aren't strong enough to make a sturdy fit. It easily falls out, makes noise when handling, and turns easily while closed. I have a couple other pens that rely on magnets to close the pen, and they are rock solid. I have to wonder if stronger magnets would solve this problem.