Allods Online Forum

warrior ->

have dual weapon -> bow / crossbow = visible
have large weapon (2-handed) -> -> bow / crossbow = invisible

scout ->

bow / crossbow = visible always

you can only adjust visibility of headgear & cloak & armorshell in options, not weapons

i think is a good idea to go to new frontier server

1 more thing related:
you can later get an item ("insigna") which change weapontype in endgame
for example in astral my psionicist found a 2handed sword but i prefer the look of dual-daggers for psi so i get this item and apply it to the weapon
get it in KOE at vendor NPC or at BG-reward NPC, its called insignia of idontknow and has purple color...

for scout & warrior you can also change bow / crossbow this way (but its only cosmetic, in the past crossbow did more damage, but this mechanic has been removed)