The theme is somewhat interesting, and it sure is convenient that the longest name for the left hand and the revealer are both 15 letters long, but this puzzle seemed way too easy for a Wednesday, and a little too full of DARER (57A: Courageous one) (all left hand), ASPIRER, ANAEMIA, ATNO, and ETAL.
I like SCHWAS (5D: Start and end of 3-Down, phonetically), but I never even saw the clue until just now, reviewing the puzzle for this review. And I can't decide whether to love or hate ATHWART (2D: Crosswise). SKIRMISH (9D: Minor battle) is nice, too. And SEAGATE (44D: Channel to the ocean), too, is a good word.
I just didn't love this one as I was doing it, which is too bad, as I review it now, because there really was some nice material. I think it was something about the clueing that turned me against it. Also, our "pigs in blankets" were not WIENERS, they were some kind of ground meat. And the blankets were cabbage leaves. And we had them with raisin sauce. Mmmm..... those were the days.