InfoPath Dev

  I get the impression that the default DIP will run in Form Services alone but if you customise a DIP it requires the Infopath client locally ?   Can anyone confirm or deny this ?   thanks

I would imagine this has been asked before but I can't find anything obvious on it so I will ask the question If I use the default Document Information Panel on a content type, and have a lookup field which looks at a calculation field on another list (Calendar in fact) I get entries in the drop down in the format; string;#<value> ...