Is a kill level 3 on red side worth the time you loose to full clear?

When I'm red side with evelynn, I clear my red camps and gank top and easily get the first blood, most of the time the ennemy jgler don't have time to take my blue side before I get there. But i'm master and I've never seen any streamer do that, I'm wondering if it's that worth to do since you take more time to get level 6.