Which Gucci sling should I pick first?

The Dome Sling in microguccissima black is the daily pick: structured enough to hold shape, embossed rather than printed, so it wears quietly. The Soho Camelia in beige reads softer and warmer if most of your wardrobe runs earthy tones.

What actually fits inside these small crossbody formats?

Phone, cardholder, keys, kajal, and folded sunglasses in the Dome and Bree. The wallet crossbody is tighter, essentially a wallet on a strap for market runs and concerts. None of these take a full-size wallet plus water bottle; that needs a tote.

How should embossed guccissima leather be maintained?

The embossed GG texture hides scratches well but collects dust in the grooves, so brush it gently with a dry soft cloth weekly. Keep it off the floor at restaurants, stuff it lightly when stored, and let wet patches dry naturally, never under a fan heater.

Marmont matelasse mini or Dome Sling for evening use?

The Marmont matelasse mini with its quilted leather and hardware reads dressier, so it takes dinners and receptions. The Dome Sling is the errands-to-office piece. If your calendar is more events than errands, start with the Marmont.