Lombardi is an intriguing option as he has experience on both offense and defense having served as a defensive line coach at the University of Dayton and Bucknell. He was also a defensive assistant for the Falcons in 2006--a year in which the defensive line recorded 25.5 sacks. However, it's his exploits as an offensive coach we're most interested in and he has quite a few credentials to his name working as the tight ends and tackles coach at the Virginia Military Institute and coaching the running backs and tight ends for the NY/NJ Hitmen of the XFL, the failed league founded by Vince McMahon. Lombardi served as the offensive coordinator and quarterbacks coach at Mercyhurst College from 2002-2005 before joining the Saints as an offensive assistant. He was promoted to quarterbacks coach two years in and has since worked with Drew Brees who as you all know has shattered a few records along the way.
Shurmur on the other hand is another retread coach who from what I've seen and heard would be the equivalent of re-hiring Brian Schottenheimer. The Browns have had well-documented offensive struggles for years now and Shurmur was unable to rectify those struggles during his tenure.