I would say no, since there will always be something else out there which is better - admittedly, we know future itemization since P1999's path is laid out.
I guess it comes down to your goal - if your goal is wield the hammer, go for it. If your goal is badass weapons on your shaman, maybe no. If your goal is something different and the hammer is just the means to that end... explore your goal more.
For me, I pick first based on what I enjoy doing in a raid, then from all those combinations strongly associated with those activities, I pick race/class based on visual appearance.
Goal...
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