This is cool.
I have the Premium Format, and i really like it. Sideshow did a good job sculpting Arnold's physique, good proportions. I personally don't see major scale issues with this piece. The likeness could be better, a little soft for my liking. Could PCS do a better job? probably, but i think i'd rather have something we haven't seen before.
I really like the first image Gruson posted.
but if you choose to produce this definitive pose, i would rather his hands/grip more aggressive like this
I really iike Wand's last image:
That is a beautiful museum pose that would lend itself perfectly to the scale. That pose kicks ass.
another one to consider is Renato Casaro's movie poster
something different, pretty sick as it's Arnold's likeness in the poster. not sure if your license covers that.
King Conan, EPIC.
Pit Fighter, the meanest on-screen Conan
Battle Armor, great helmet!
awesome pose, but too concealing for a 1:3 scale statue
here's Edinho Maga's 1:3 scale Destroyer with the man himself!