SC - yep, very pronounced. It's more visible from outside, though. I was watching a Yak waiting to taxy the other day and even at tickover there were little 'feathers' off each prop tip. Sometimes take off can be quite spectaculor, with a 'cylinder' of vapour off the loaded prop.
Had the carb ice can't move the throttle thing as well. Only on the ground, luckily !
SSD