A man purse indeed.
I got mine in Thailand for $10. Lasted a few years now. Keeps your items safe in locations where you need to have things in front of you and you don't have to rummage in your pockets for you wallet or your phone. The thing you might wear on yourt belt can obstruct access to your pocket and you don't want to reveal that area of your body to public scrutiny whilst accessing your wallet.
I carry my 8" iPad air, wallet, and cellphone in the three separate vertical load compartments. It also carries a pen and spares for my hearing aids and one or two other minor items.
I don't use it on the Spyder, but for everywhere else, I can grab it and go without worrying about trying to store everything in pant pockets. My keys clip to it.