Yea, Ibis banned 2 different players called Banana, but I don't see any similarities between any of them, and we only have 1 IP address to go by.

http://www.ibisgaming.com/sourcebans...a&advType=name

Here's all three of their Steam Community Profiles:

Ones Banned:
http://steamcommunity.com/profiles/76561197970877160
http://steamcommunity.com/profiles/76561198025644004

New Banana:
http://steamcommunity.com/profiles/76561197964540253