Would make for a great Sanji opponent.
The sucking off nutrients from his foes makes for a nice contrast to Sanji who's willing to feed even his worst enemies due to his principles. His lack of need to actually eat could also come into play or be contrasted with Sanji's proficiency in cooking though I don't really see how that would come up in a fight.
Out of antagonist groups, being notably into ladies and also expressive is a good sign you might face Sanji. Aramaki does seem the most like a Sanji opponent out of the Admirals if we follow Sanji's past opponents and seek trends.
The black blade is also really cool. Sanji doesn't usually face guys that are noted for their swordsmanship so if Aramaki makes good use of his black blade in their fight, that would make for a nice change for Sanji and force him to adapt.
Overall, really great potential opponent.