Not a good idea. Even if you aren't putting enough pressure on it to disengage the clutch you could still put added pressure on the throwout bearing and cause premature wear. You wouldn't drive around with your foot lightly resting on the brake pedal and the same should be done with the clutch pedal.
^^I agree^^ Funny thing is, my late step dad would drive around all the time with one foot on the gas & the other on the brake. He was so used to driving a stick shift car that he never could get used to driving an automatic & this was back circa 1956. He put more than a few brake sets on that old `56 Olds.
2013 GT CONVERTIBLE GHIG
2015 F-150 King Ranch crew cab
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