DSN specializes in PAM. The most visible difference between a DSN and a high grade PAM rep from another collector is the lume on dial and hands. To get a (pretty close to) perfect PAM rep, you need much more than either DSN or any other collector delivers out of the box. But then again, "close to" depends on how anal you are. Some members will discuss for hours whether the spacing of the print on the dial is off by fractions of a millimeter, others simply don't give a...
The movements all come from the same country (CN), so do the crystals, and if you want perfect Crownguard, perfect crown you will have to source additional parts anyhow.
Therefore - if you are concerned about customs but absolutely want a better than out of the box PAM, why don't you check the sales section and wait for an EU member to sell his modded PAM?