Ah finally a difference...
I personally want nothing to do with thumbhole stocks makes it far to difficult for me to cock the hammer quickly.
I mostly use my Contender carbines and the Prohunter to still hunt thick rain forest here on the south wet coast of British Columbia for Coastal/Columbia blacktail.
When a shot presents itself I have only seconds to decide weither to take it or not.
I do not walk around with the hammer cocked with safety engaged I keep the select lever in the center fire position and cock the hammer when I want to fire = a thumbhole stock slows me down.
I have switched most of my firearms to stainless steel with black/gray laminate stocks/grips now.