[pyre]

  | finding good clients for Linux has been
  | more challenging than I expected

What are you looking for a potential client to do? Like a Linux version of Apple's iCal.app / AddressBook.app (i.e. standalone, more or less single-purpose apps)?

[callahad]

More or less. It looks like my only options are Evolution or Thunderbird with a pair of extensions (Lightning + SOGo Connector).