[mr_crankypants]

I, too, love fountain pens.

Except when I forget to take my daily out of my pencil case before flying. :(

[wlesieutre]

Sounds like someone needs a Conid with the sealed ink reservoir ;)

[wlesieutre]

Past edit window, but TWSBI Vac Mini is another (much cheaper) one that can seal the nib off from the reservoir.

Since air expansion in the reservoir is why low pressure pushes ink out the front, a seal between reservoir and the feed means they're safer to fly with.