For as long as I've been playing a warden (2006) the answer is no, wardens cannot use ranged weapons such as bows, etc. We can use spell ranged weapons... those wandy things they introduced in DoV for mages and priests that allow you to do spell auto attack. Most of us play melee, though, and would use melee auto attack, so they really aren't too warden friendly. But now here's what gets me... yesterday I'm perusing "elite raiding guild" wardens on EQ2U. You know, just to see what they are wearing adornment wise, etc... and one of them has SHURIKINS equipped. After 6 years I now wonder what I missed. I was going to look into this last night but got sidetracked by Valentines Day candy... I'm only half convinced I'm seeing things.
Priests/mages cannot use ammo consuming ranged weapons. As Foretold mentioned, the only available option are spell weapons which occupy the ranged slot. They are unrestricted in equipping ranged ammunition, which can lead to a minimal damage increase due to triggered effects. Example: Burning Deathfist Arrow
I found his profile again. This is the shurikin he had equipped. No trigger effect. Odd. http://u.eq2wire.com/item/index/1907531804
It isn't uncommon to equip cosmetic pieces in these slots. It was popular to equip a Swift Slicer to show progression into the Claymore Timeline, especially since the dps gain is minimal. Free damage is free damage, however.
Mages and priests can all equip ammo (arrows, throwing axes, shuriken, etc) but they can't actually use the ranged weapons that use that ammo
Some players have really terrible Character OCD. A raiding Warden might very well equip a shuriken there because it IS equippable, and that means they don't have to look at an empty slot on their character screen. I have a Swift Slicer in that slot for the exact reason - even though I can't use it or any other thrown or ranged ammo.
My raiding warden carries around a quiver of arrows... to help out if rangers (or others) run out mid-raid. Granted with the ammo changes in CoE it's not an issue any more, it was quite helpful before.
