I have the Sarah wallet in mono canvas, and you can't fit both of those things in the Sarah.
iPhone 6 by itself (thin case) - yes
Cles with car fob (on the smaller side) and two keys by itself - barely. It fits, but it's a stretch
Definitely can't fit both.
I can speak for Zippy, iPhone6/8 fits in the Zippy provided it’s not stuffed with too many cards/cash. Not the Cles. Iphone6/8 fits in the Emilie and I assume the Sarah being wider, is able to do the same but not both phone and Cles.
I think you should consider the Pochette Accessoires NM that it able to carry a full size wallet, phone and Cles with room for lipstick and car keys. It’s a perfect clutch for quick errands and you don’t ‘kill’ the full size wallet.
Another option maybe? Jeanne wallet fits all iPhone models, including +'s, a 4 key-holder and a chunky lipstick (like Dior) on top comfortably. Maintains original size/shape perfectly.