pilocide

Hey Guys, I have some questions regarding Rode's PSA1 boom arm. I couldn't think of any other place other than this forum to ask, this is my first post ever. So here's my query: I have a Rode NT-USB and I want a boom arm to go along with it, my choice is the rode PSA1 boom arm as it holds good reviews. So, I was wondering- Do I need to invest in a shock mount in addition to the boom arm? Cheers -Pilocide