His father worked as a bus driver for Western Transportation and later as a security officer for Bahamas Faith Ministries.

[5] He was included in a blockbuster trade on November 29, 1971, when the Cincinnati Reds acquired him from the Houston Astros along with Jack Billingham, Cesar Geronimo, Denis Menke, and Joe Morgan, in exchange for Lee May, Tommy Helms, and Jimmy Stewart.

[3] Armbrister made his MLB debut on August 31, 1973, at the age of 25,[4] entering as a pinch runner for Pete Rose and later striking out in his only plate appearance in a 10–4 win over the San Diego Padres.

Home plate umpire Larry Barnett did not make an interference call on Armbrister, a decision which was a source of heated debate after the Reds won the game, 6–5.

He was a craps table croupier at Resorts International's Paradise Island casino and worked for at least one other establishment in the gaming business, a staple of the Bahamian tourist economy.

He worked for the local government and consumer affairs agency around 2006 on Arawak Cay, a popular attraction in the Nassau area.