Chris Wong has a got a nice mod over on Flair Woodworks. A simple modification to stop his marking gauge rolling off the bench and hitting the floor. By filing down the round profile, you get an octagonal, heptagonal, (you choose), shape that doesn’t roll quite so easily.
It’s a nice tweak and I guess if you have one of these gauges, pretty easy to do.
With regards to gauges, I’m with Paul Sellers. I like the old mortice gauges and have always found the standard pins give a fantastic result for marking. Not only that, they are easily sharpened and replaced. Like most things in life these days, these new gauges come with the need to keep buying new cutters. Get yourself an old-style gauge, make sure it has good pins, then really you can’t go wrong.