There are ultra tiny, ultra sexy g-strings that cover so little you couldn't walk one mile in them without your junk falling out - not very practical.
There are super snug, super comfortable g-strings that hold your package securely in place with so much cloth you feel like you're wearing briefs...
I came up with the idea of creating a double cock-strap-string. You just need two cock-straps and some yarn. How do you like it? I like to wear as it always reminds me of my best piece. (For the first picture, I used another yarn, which was thinner than the later one)