In my experience in the RH seat of narrow and wide body jets (5000+ hours) captains who put their feet on the rudder pedals during t/o and ldg compromise my handling a little bit, annoy me a bit more and generally have personality issues.
I usually rest my feet on the rudder pedals but have never covered the other flying controls as I think that's an insult to the handling pilot. There was a line trainer with my old company who always followed through on the controls during take off and landing and I remember this causing offence. Some pilots prevented this by releasing the controls and saying "you have control" and he would usually take the hint. As far as the rudder pedals go there should not be any restriction from the NHP's feet unless he's a clumsy type with size 12 feet!