Depends on the day. I was never a huge fan of vests. I used a single small pouch. About 18 months ago, I broke down and purchased a vest that I though I could work with. I wanted something I could throw my rain jacket in and because of health issues, I now need to keep food and drink in there + Bug dope on occation. The TP goes into my inside wader pocket.

Sometime I like to have the option of switching up fly lines so I may have a reel spool in there as well. I still try not to take too much, keeping it as light as possible.

If I know I'm fishing for less than three hours and the weather is nice...I leave the vest behind.