Yeah.....but it's a pretty significant leap to compare "engineers in fluid qantum mecchanics [sic] or geneticists" and an arts major/lawyer. Engineers and geneticists have massive quant experience, arts majors and lawyers do not. So you didn't really answer P's question.
It's a disadvantage, but not a major disadvantage. It depends on the firm, the type of consulting you want to do, and the school you went to.