Is this bag big enough for everyday use?

No. It is a pochette, about an inch deep, so it holds a phone, cardholder, keys and lipstick. A full wallet or sunglasses will not fit comfortably.

Can it be worn crossbody?

It comes with a single shoulder strap, so it is designed to hang under the arm. Wearing it crossbody depends on the strap length and is not the intended style.

How do I care for the suede?

Treat it with a suede protector before first use, keep it out of rain, and brush marks gently. Store it stuffed and in a dust bag to hold its shape.

Does the red suede transfer onto light clothing?

New suede can transfer color, especially against white or cream fabrics. Wear it with darker clothing at first and avoid pressing it against light materials in heat or damp.

How does it compare with Kate Spade's leather shoulder bags?

Leather versions resist rain and stains better and hold their shape longer. This suede pochette is softer and dressier but needs more care and carries less.