Jungle Items for Vi?

I play a lot of Vi jungle and I usually pick up a Stalker's Blade with a Warrior enchantment. I like the chilling smite for its help in ganks, though I have considered trying the Skirmisher's Sabre to see if it's better for late game fights.

However, I have been getting a lot of suggestions from people in my games to get a Ranger's Trailblazer. This seems like a bit of a waste, since she sustains pretty decently and her E can usually kill the little minions in a shot or two, so the AoE aspect of the smite isn't really necessary. I just wanted to make sure that I'm not missing something here.

I have also been experimenting recently with going Devourer instead of Warrior. I actually quite like it... Vi's skills largely revolve around Auto-attacks, particularly her W. If I'm doing well in a game where the enemy team has more than one tanky player, I will go Devourer and max W before E. The %Damage is great vs tanks and the faster you attack, the more procs you get in a team fight. One side effect of this is I seem to clear the jungle waaaaay faster with Devourer, as opposed to Warrior. The last few games I've done this I've had pretty obscene stacks on my Devourer by the end of the match. It makes sense to me that going heavy attack speed (Bererker's Greaves and Devourer) combined with the stacking armor penetration of Black Cleaver would be pretty good on her. Is this terribly bad compared with the Warrior enchantment? A lot of players in my games have given my crap for it... until I beat people senseless, then they shut up. I just want to be sure I'm not totally handicapping myself.