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I went about a month or so ago and got my custom ear plugs.
The day of the event at MotoMarket, the guy making them was missing his assistant, which really made the process slow because each person has to be seen twice. Once to get the stuff put in your ear and Once to get it removed. To expedite the process, they were curing them later and mailing them out to the customer.
My fitting went fine with no issues and I got my ear plugs right around when they were expected.
Today was my first day riding with them and I have to say they really made a difference and I missed them during the short stint I rode without them today. There's enough sound to get through I could hear the ride safety meeting this morning (as soon as I stopped chewing my gum), but definitely minimized the ambient and wind noise on the bike.
I can't compare them to other ear plugs as I just started wearing them now.