Can I use a Calligraphy set for normal writing?

I used a fountain pen with a calligraphy nib for many years as my normal writing pen, but I wouldn't recommend it for note-taking. Do use it for other writing activities, though. I don't know about the ink, though, as I'm in the UK. My current Parker pen (not calligraphy) takes both Parker and 'generic' ink cartridges.