I've never heard that Kahr would do it myself, that does not mean it's not true.
I do love front strap checkering myself. There's a fella here that does find front strap checkering but he won't do it for me, I've begged. Maybe if he likes you better, he would do yours? Don't ask his name, I won't share it.
Usually if you have good grips like Al's you don't really benefit with front strap checkering but if you have smooth polished grips or like ivory and such, it's really good.
In Memory of Paul "Dietrich" Stines.
Dad: Say something nice to your cousin Shirley
Dietrich: For a fat girl you sure don't sweat much.
Cue sound of Head slap.
RIP Muggsy & TMan
"If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."