Question: Did John Lydon and Jimi Jamison have the same profession?

Context articles: Open Up (Leftfield song)
John Lydon
Vital Signs (Survivor album)
Too Hot to Sleep
Martin Lydon
Public Image (song)
Hybrid Ice
Jimi Jamison
Psycho's Path
Public Image Ltd

"Open Up" is a song recorded by Leftfield and featuring John Lydon (of Sex Pistols and Public Image Ltd.).
 It was released as a single on 1 November 1993.
 The single reached #13 in the UK Singles Chart.
 The NME reported in their 18 September 1993 issue that "This is the record that people have always wanted Lydon to do."
John Joseph Lydon (born 31 January 1956), also known by his stage name Johnny Rotten, is an English singer, songwriter and musician.
 He is best known as the lead singer of the late 1970s British punk band the Sex Pistols, which lasted from 1975 until 1978, and again for various revivals during the 1990s and 2000s.
 He is also the lead singer of post-punk band Public Image Ltd (PiL), which he founded and fronted from 1978 until 1993, and again since 2009.
 Since 2013 Lydon has held dual British and American citizenship.
Vital Signs is the fifth studio album by American rock band Survivor and their first with vocalist Jimi Jamison.
 The album was their second most successful in the U.S., reaching #16 on the Billboard Album charts and being certified platinum by the RIAA.
 This album includes the singles "I Can't Hold Back", "High on You", "The Search Is Over" and "First Night."
Too Hot to Sleep is the seventh album from rock band Survivor, released in 1988.
 It was a relative commercial disappointment, reaching only #187 on the Billboard album charts, though "Across The Miles" is one of their biggest AC chart hits.
 After this album, founders Frankie Sullivan and Jim Peterik put the band on indefinite hiatus, while lead vocalist Jimi Jamison would continue to tour under the Survivor name (thus resulting in a lengthy court battle regarding rights to the name).
 Drummer Marc Droubay and bassist Stephen Ellis were replaced by studio musicians on the album.
 The lineup of Sullivan and Jamison would not reunite until 2000.
Martin Lydon, Irish murder victim, died 21 May 1881.
 John Lydon, his son, died 25 May 1881.
"Public Image" is a song by Public Image Ltd.
 It reached number nine on the UK Singles Chart.
 The song was written when Lydon was in the Sex Pistols.
 The song addresses John Lydon's feelings of being exploited in the Sex Pistols by Malcolm McLaren and the press.
 Along with being released as a single, it appeared on PiL's 1978 debut album "".
Hybrid Ice is a rock band from Danville, Pennsylvania, most notable for its song "Magdelene" released on the album "Hybrid Ice" in 1982, which became a radio hit at the time.
 "Magdelene" was later covered by Boston on their 1994 album "Walk On".
 In 1984, with two sold out shows, Hybrid Ice was the first rock band ever to play at the Bloomsburg Fair.
 Hybrid Ice has toured with many notable musical acts, such as Foreigner, Kansas, Joan Jett, Bad Company, The Beach Boys, Steppenwolf, The Edgar Winter Group, Ted Nugent, and Lita Ford, as well as several others.
 More recently they have played with Jimi Jamison of Survivor, John Cafferty of the Beaver Brown Band, Derek St.Holmes of the Ted Nugent band, and Kevin Chalfant of the Journey Experience.
 And have played the "Legends of Rock" Cruise for 2015-17.
Jimmy Wayne "Jimi" Jamison (August 23, 1951 – September 1, 2014) was an American musician, singer, and songwriter.
 He had previously been the frontman of the platinum-selling rock band Survivor between 1984–89, 2000–06 and from 2011 until his death.
 Jamison is also known for writing and performing "I'm Always Here", the theme song for the TV series "Baywatch".
Psycho's Path is a 1997 solo album by John Lydon, released by Virgin Records.
 Lydon sang on all the songs and played most of the instruments, with additional guitars and keyboards supplied by Martin Lydon and Mark Saunders.
Public Image Ltd (abbreviated as PiL) are an English post-punk band formed by singer John Lydon (a.k.a. Johnny Rotten), guitarist Keith Levene, bassist Jah Wobble, and drummer Jim Walker.
 The group's personnel has changed frequently over the years; Lydon has been the sole constant member.