No its not worth it.
buddy I play shyvana jungle and only counter jungle buffs.
And I run exhaust.
I've never once used anything besides chilling smite/trail blazer on any jungler.
I haven't played ww much since season 2.
He's only popular because sabre is a broken item.
not because he's broken.(seems to be a common misconception in this game that because an item is broken the champion is therefor broken rofl)
http://lan.op.gg/summoner/userName=TenSlashTen
IE op :^)
also ignore that ignite exhaust irelia game.
Doesn't teach you anything for looking at that XD
I usually play shy into lee sin.
Nothing out duels exhaust shy or trundle.
Nothing.
Trundle is the strongest duelist in the jungle
and Shyvana is one of the strongest split pushers from the jungle.
you can afk side lanes until 4+ items all day and then 1v1 whoever comes to stop you with exhaust.
Assuming you didnt fuck up early game you shouldn't have any deaths before the second or third dragon fight.