Whenever I listen to the Vanguard recordings, it sounds as if the engineer boosted LaFaro's sound to almost give him equal footing with Evans' piano. I don't think the it would have sounded like that live, only on record.
The Vanguard recordings are ok - overrated in my opinion, relative to other jazz that was being played at the time - but I'm with those who dig the pre-Vanguard Evans more and with those who say that Philly Joe was the drummer for Evans.