I drew these guys with a Pilot Custom 823 FA and Platinum Carbon Black ink. The FA nib has a good drawing width on watercolor paper - one of my favorites. It's a soft nib but I don't use the line variation, just some nice shock absorption with each downstroke. The Carbon Black ink is out-of-this-world good, though being pigmented I fear keeping it in too many pens.
Standing on a block (while two men sit up top),
The horse is deep in thought, wondering "Where can we walk?"
He's distraught 'cause he knows that there is nowhere to go,
And it does no good to tell them, they'll just say "I told you so."