German nib sizes are about one size larger than Japanese nibs; a fine Pelikan nib will be about like a Platinum medium. And the Pelikan nibs are notoriously wet writers; the only ink I found that would tame one well enough for my handwriting was an old-fashioned iron gall ink that wasn't quite waterproof. BUT--for sketching on watercolour paper I expect that such a wet nib will be an advantage, allowing one to sketch freely. I have pulled out my old M200 (which feels just wonderful in hand) and will give it another try for sketching.
German nib sizes are about one size larger than Japanese nibs; a fine Pelikan nib will be about like a Platinum medium. And the Pelikan nibs are notoriously wet writers; the only ink I found that would tame one well enough for my handwriting was an old-fashioned iron gall ink that wasn't quite waterproof. BUT--for sketching on watercolour paper I expect that such a wet nib will be an advantage, allowing one to sketch freely. I have pulled out my old M200 (which feels just wonderful in hand) and will give it another try for sketching.