Metallizer was one of the earlier products for NMF created directly for the scale plastic market, and may have gone through some product reformulations in the last twenty years. Back in the 80s FSM did a nice piece on working with Metallizer using the Mono B36, and at that time it was highly susceptable to fingerprinting unless you put the sealer coat on, which kills the metallic look.
Im using Alclad now and find that while Metallizer has its uses and provides different tones, I much prefer Alclad. Within half an hour it is tough as nails and resists just about all that I throw at it, including an enamel wash.
Practice makes perfect on the NMF finishes, you may even want to try the good old standby Rub N Buff to see the totally different tone variations you can get there. SNJ also makes a very sturdy product but the aluminum dust that is used to create the highly reflective finish makes a real mess...
David
Build to please yourself, and don't worry about what others think!
TI 4019 Jolly Roger Squadron, 501st Legion