workstation vs server

Hey guys,

Someone at work just made the claim that people only use up2date to 
upgrade workstations, and generally not servers.  I can't really remember 
what the mix was when I was working at RHN, although I seem to remember a 
lot of people upgrading servers with it as well.  So I'm curious now .. 
who on the list is using Current to upgrade servers, and what is your 
ratio of servers/workstations that you update?

--Patrick.