I'm not sure what the IMC course contains with regards to PP [failed gyros] flight but the FAA IR the course had a very strong emphasis on PP including unusual attitudes and stall recover PP under the hood. I wouldn't say I'd be happy suffering a gyro failure in IMC, but I wouldn't be unduly worried about it either. In my opinion whenever practicing instrument flight / approaches in VMC then you should always do them PP, and not shy away from PP training, no matter how much you don't enjoy it. In my limited experience I've seen a suction pump failure on a Seneca, which although has two pumps, failed the gyro system, and a PA28 with a decidedly dodgy AI that started to roll for no reason, even though the suction was fine. The hard part is not the PP flying but deciding that an instrument has failed and to ignore it. Its a good idea to carry one of those suction type soap holders in your flight bag, so if an instrument fails, you cover it up to stop yourself reacting to it. [cheaper than anything 'aviation'
]
Cheers
EA