Take this as a grain of salt: I'm not a converter. That's what drove me to Warmachine and Hordes first over anything Games Workshop. I hate not having options for each model build and I hate having the scratch sculpt something to work well.
However, Nathan (PG_Rydiafan) convinced me that my second Phoenix had to have a two-handed grip on her sword. I was a bit nervous because the model was plastic and I really didn't have the bits to fix any mixup. The glue and bond time on the plastics from Privateer Press are super short, so if you screw up, it is really hard to change. I'm glad I got it mostly right on the first try.