For those unfamiliar (like me initially), choripanes are popular Argentinian street-food sandwich creations filled with chorizos and topped with chimichurri.
Hence, the name Choripán -- a combination of the words chorizo and pan (bread) -- not unlike the etymology behind American "Spam".
I have no point of reference, as this is my first foray into this delicacy, but the choripán at Hola Che (a quintessential hole-in-the-wall joint in Pacific Beach) is a hot, grilled, heavily condimented sausage in a nice crusty, slightly chewy hoagie-esque roll.
It makes the best hot dog seem like a wiener in need of an extra dose of Viagra.
1136 Garnett Ave, Pacific Beach