I'm a lefty and I switched successfully to Mitsubishi Jetstream pens a few years ago. They don't smudge unless you're writing on glossy paper. I bought mine at a Japanese stationery/pen shop in SF (at the mall next to Union Square) a few years ago, but you can find them anywhere. Here's a Rakuten link: http://global.rakuten.com/en/store/atn/item/sxn-15005/