Really long animation. About 1.5 times as long as shockwave. Thing is, if you're running a scrapper, the extra crit bonus on eviscerate coupled with the +crit chances from the AT IOs makes it a very hard hitting attack often. Pretty sure the best time I got on my claws/bio scrapper was with a fu, focus, evisc, repeat chain. Shockwave's end cost was always way too high for me to ever use it in a ST attack chain. I know with Destiny Ageless you can get away with it, but for me, I'd rather just stick with fu, focus, slash, repeat and a boatload of recharge to make it happen.