soulstealer / SOTO hybrid builds

this just seems incredibly OP. get 1 kill with a soulstealer/soto combo in your items on a hybrid champ with any decent escape mechanism and all of the sudden you are untouchable

http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/1662179746/212116995/eog

first game trying this. rushed both items sequentially (which i thought might be incredibly stupid) and snowballed like hell. after 3 kills and 1 assist I 100-0 combod darius and warwick 1 after the other.

perhaps these items should be a one or the other kinda thing? like gold income items? the ability to get stacks on both at the same time just amplifies your damage output way too much