I primarily use document inks for addressing envelopes, which can be infrequent. To avoid clogging a pen, I’ve been considering getting a dip pen like the Pilot Iro-Utsushi. It’s still a metal nib, as opposed to a glass pen, and more for everyday writing than a calligraphy nib.
You should look at kakimori dip pens. It is highly regarded in the reviews I’ve seen except perhaps the standard pen nib attachment which in one review was considered scratchy and stored very little ink.