I'll quite often leave my wallet at home and carry just my clés if I don't need much. Last night I went out to dinner, all I needed was my keys and my Switch card so I popped that in my clés (car key attached) with my license and I was good to go. I don't recommend the clés - certainly not the smaller, canvas ones - for multiple cards plus cash because I've had notes stuck in the zipper before! Not good.
It depends on what I'm doing but I get a lot of use out of my cles.
I love using when I'm at my kids sporting events. I can fit insurance cards, debit card, coffee punch card, cash & chapstick, I'll keep my keys attached.
Most other times it's when I don't feel like carrying my purse or taking my wallet. I'll usually just take some cash and a debit and/or credit card and my coffee punch card. I use it far more than I thought I would. I typically put my cards back into my wallet unless I'm lazy, when I do then I just keep my keys and car fob in there until I'm going to use it again. I love mine!
It depends on what I'm doing/going that day. I mean, if I were only going out for food.. then I'm sure drivers license, and a visa is sufficient enough. Otherwise, I feel more secure having all my IDs and cards with me..
I keep my most used CC, and ID, some cash, my ipod headphones, gym card and work access card in mine. I find that yes it is a tight fit with those items, but it keeps me from getting it too messy. I carry it that way to the gym, most other times though, I put it in my pochette as a mini bag or just keep it in the bag I'm using.