Not really. Most Marines don't even own a Kabar unless they earned one. Mine is on a plaque I earned at Corporals Course for the Gung-Ho award. I have only seen a very small number of Kabars being used in the field. I am talking about the USMC Kabars. I have seen the Becker/Kabars being used.
Yes, push a button and it comes out automatic. They usually have a box full of 5-7 models of switchblade Benchmades for us to pick from before we head downrange.