Ohhh yeah i love the both tools FDT + Flash Buidler…
One tool is perfekt for design a GUI and the another one is perfekt for coding in AS 3…
My first step in FDT is with 2.0 Beta version… There is my love in FDT 
…
Than in found Flex Builder and think hey wow u have many components 
that’s what u want… But the coding was very ugly/dirty/fucking bullshit…
And NOOOWWWWW i can use the both best tool for As 3 FDT and Flash Builder in a one eclipse instance … Hey wow that is godlike 