Hey all, im looking into getting a fixey to start riding for fun...no velodrome!

Anyways, Ive been looking at some different cheaper bikes...Raleigh Rush hour, IRO, pista, steam roller, etc

I recently, however, found a 2005 pista concept that im going to check out for a little under $600
I was like wow, thats awsome, a 1400 dollar bike for 600...
Yet, ive recently been reading that the concept isnt a good bike to take outside of the track, because of the aluminum frame?

Please help this lost soul get a bike

Yay or nay on the concept?
Why?
Thanks a lot