Thanks for the replies.
I was aware the Concours didn't have it but wasn't up to speed on the newest H2 type tech.

For more info than the dog that sniffed the lamppost see video below.
It's from the other big K, but applies to all.
This video does not discuss linked brakes which are a different animal altogether.
https://www.youtube.com/watch?v=hHRWg91hv-M&app=desktop

I practice my emergency stops using both brakes. The rear does not add much in terms of braking force, but it could be the difference between a crash or merely soiled underwear.
I practice on both my C10 (no ABS) and my C14 (ABS) and the stopping distances from the same speed are broadly similar but the C14 always wins by a few feet, probably due to fatter tyres. On the C14 if the ABS activates (vibration in the lever and ABS light on) then I consider that a failure and try again.