I'm just gonna make this brief.
Sniper, Gunslinger, Wizard & Stalker Weapons from the F.City mall are 2 handed.
Since Valk weapons for those classes are 1 handed, why not make those weapon for sale at the mall 1 handed too.
But you can do the quest for a 1 handed weapon.
Yes you can, of course you can. However not all players are that quest super active.
I'm sure there are players that would rather save tokens and buy the weapon.
Pros:
Newbie player can benefit from this because it allows them to use the shield therefore they have a chance of surviving longer.
Cons:
What "cons" can there be?