Westy -- If you try it without practicing you probably will make a mess. I did with my nice Scuba Pro gloves because I didn't practice first. Now that I have the hang of it, it looks fine on my other gear. Just take a piece of cardboard or throw-away cloth and practice getting a smooth, consistent line. You will catch on pretty fast. At $1.19 you won't mind using up the Scribbles 3D Paint to practice. With $6 plus shipping "Scuba Goop" ... not so much.
As Walker said, it won't stick that well to masks, fins, etc.; marker pens are best for those. But it's great for wetsuits, booties, hoods, gloves, sheaths, etc., which I've found require constant remarking with marker pens. The Scribbles 3D Paint will stick to those great, it will last, and it is way more visible. It's also cheaper.
I'm with you on finding a dive shop you trust. When I was first gearing up, I picked up some stainless snaps, and the guy said, "Don't buy those here, buy them at Home Depot. They're half the price." He explained that they stock them for people to whom price is no object.
And I suppose people like that who read this thread will still want to buy the jacked up "Scuba Goop" for convenience. More power to them. I just wanted to share this information with divers for whom price does matter. And to expose what I still think is price gouging on a product that admittedly could be sold for a higher price to divers than to crafters ... but 600 percent higher? Plus the shipping? Not if you have a rudimentary sense of right and wrong.
A Web site that does that and then deletes an honest product review is not in the same league with your Diver's Supply in Macon or many other businesses I deal with. They can blame it on the supplier. Or they could state in the product description that this is Scribbles 3D Paint, a crafts store paint that works great on wetsuits.
FR