I don’t like dice bags much when using them to hold dice, but I use an old dice bag that I had lying around to randomize my Unit Tokens.
I’ve seen a lot of players try to shuffle the Unit Tokens and not use any bag to randomize.
I know that shuffling them is legal, but I don’t think it does a credible job of randomizing and I think it can give players that shuffle an advantage.
Still, I won’t ditch the dice bag. Dice bags are cheap, and I’m not sure why every player doesn’t have one.
Do you use one or are you waiting for that to be one of the prizes in a tournament? Do you even like them for this? Do you have a problem with players that don’t use them? If you don’t use one, why?