I’m a PHP developer who uses drupal whenever the job looks like it could benefit from a CMS. I was having a discussion with a colleague who said that it helps him a lot with clients that he knows multiple content management systems. To me, this sounds like dividing one’s efforts, and I’m not sure if it’s worth it to invest the time learning another content management system.
Is it often that jobs lend themselves better to one content management system over another? or can most content management systems handle most jobs?
I’d say that a thorough knowledge of one CMS is more important, you’re just so much efficient if you really know what you’re doing. Drupal is also very flexible, you can do just about everything with it, even though it sometimes is quite complicated.
I don’t think you gain much by learning a similar CMS, but it could prove usefule to know a CMS that is very different from Drupal. For example a very simple CMS that you can use if you just don’t need all the complexity Drupal brings in.