I don't, just saying it's way better on Morg than Kat. I dunno how spellvamp stacks but it just feels useless on people that start with 0%. I gotta learn to stop using hextech revolver on Ahri and learn to DFG, myself, but I keep forgetting about item actives to do that.I could theoretically sustain better with just pots, but yeah old habits. I used to get it for S2 Eve when she was super OP because I roam forever; HP and running out of wards are the only things that makes me go home.
Why would you even get extra Spellvamp on Morg?
But today with Kat you might want to go straight up to Haunting Guise and get a bunch of pots or something.