I myself have always been the "jack of all trades" DBA, production, development, data architect and even some programming. I have been of the belief that the production DBA is slowly being phased out. I've worked a lot places where the System Admins maintained backups and routine maintenance and just used me as a reference as I focused on other things. I have always considered by wealth of different experience to be an asset, but at times it leads me to tasks that I don't feel are that of a DBA, but in the end get to learn something new and of value seems to be a good tradeoff. Having said all that, you should definitely take advantage of this opportunity as long as you can stand it and then hopefully move up and on to something that excites you and is even maybe a little less stressful. I have found stress in every area at sometime in my career.