I find that hobbyists have a harder time controlling the audience (ie friends), some who want to
discover your secrets--even if it means embarrassing you. I have this pouch, but the pouch is not
examinable; indeed the secret is very obvious the moment you handle it.
I suspect that the
above would apply to walk a round in a bar.
It certainly does all the good stuff that
others have mentioned, but bear in mind my concerns and then decide.