Oktas8 Agreed on the failure likelihood of AH vs T+B, my comments in regard to the use of either AH or T+B in IMC were only meant to be taken in regards to the situation of a VFR Aircraft inadvertently entering IMC and having to turn around safely onto a reciprocal track to return to VMC with a Rate 1 turn onto a reciprocal track being easily achieved with a T+B and your watch.
Of course it can also be done on the AH at an acceptable Bank Angle and using the DG but I'd probably trust the T+B more than an AH which isn't necessarily designed, tested or maintained to an IFR standard and is known to be a bit askew, plus if you rely on the AH and it isn't quite up to scratch like you thought then you might find yourself trying to maintain a turn on the AH which is actually based upon an AH that is toppling without you realising leading to far bigger problems.