I have a Stipula Passaporto, and it's awesome. Sadly, I don't think they make them any more. Here are some pictures (not of mine, from Them Interwebs): It's a really lovely, elegant bit of minimal design. No complex piston- fill it with a dropper. The pen seals well, and doesn't leak. The tiny leaf on the band stops it from rolling across the table, which is oddly satisfying. When closed, the pen is absolutely tiny. When you post the cap, it becomes big enough to use comfortably, even for my shovel-like hands. They were hard to find, even when they were made- I had to buy one from an Italian dealer- but it was worth every penny.