A-1's not with their hiccups, I remember watching Birdy and in some episodes, the animation was atrocious. Same went for several moments in Occult Academy. And someone already mentioned Togainu no Chi.
Kuroshitsuji was well done animation-wise though. The second season had some poorly drawn parts but animation was the absolute smallest part of that season's problems... Same with TnC, the animu would've been awful no matter who did it imho
But TnC and Kuroshitsuji are TOTALLY different genres so comparing them to the slice-of-life/comedy anime I'm expecting is sort of dumb lol
I'm expecting an overall good-looking anime with its moments of QUALITY, given a-1's track record.