Royal Robbins rocked as did the early 5.11 pants. Then they went Bangladeshi cheap.
My opinion was CQB was heavy on marketing with a dash of incremental improvement.
As for the opinion on no role for a offensive handgun in battle? The last 18 years of war seem to strongly dispute that.
Last I knew, US Army 11C mortarmen were issued an M9 as a personal weapon.
Bradley Kasal didn't emerge from some Iraqi urban renewal with the musket length M16A2, he was thoroughly offensive with a pistol -
https://www.washingtonpost.com/opinions/more-iraq-veterans-deserve-the-medal-of-honor/2018/03/23/c29e6e0c-2dd5-11e8-b0b0-f706877db618_story.html
The other place for pistols are trains, planes, buses and ships. Climbing, clambering, pushing non-combatants out of the line of Fire is easier with a freehand.My personal experience is mostly confined to school/active shooter response. Opening doors, room clearing and other associated tasks is generally easier with a handgun.
This picture caught me as a great example - assaulting a plane. Pistols seem to rule.
Andrews EST brings organized chaos to the force Geisselle even builds a Glock only scope mount called the Six Second Mount -
ALG 6-Second Mount - T1
I was seated next to a young lady who did security as a USAF Raven a few years ago. They provide inflight and on the ground security for VIP aircraft and certain unmentionable missions. Needless, the Ravens get some really interesting flights to interesting places. The young lady was demur on lots of details, but she had seen a lot of AfriCom and CentCom. That would be very offensive in the defensive realm.