I notice you're asking for a "full write-up" comparing Buttman Goes to Barcelona and a reference to Rocco Siffredi (likely meaning a film like Rocco Goes to Barcelona or his general style).

Released in 2005, "Rocco Siffredi Goes to Barcelona" is a adult film directed by David Andrew and produced by Tom Byron. The movie stars Rocco Siffredi, an Italian adult film actor and director, often referred to as the "King of Porn."

The Buttman and Rocco Siffredi Experience

September 25, 1997 (Spain) United States. Buttman en Barcelona.

: Stagliano is credited with helping Siffredi achieve his international breakthrough by creating the "gonzo" genre, which stripped away overproduced plots in favor of raw, authentic energy. Athleticism and Intensity