For a camera that you carry everywhere with you, being weather proofed is a big advantage. You will have one less thing to worry about. 25.0X Optical Zoom
25.0X Optical Zoom of Sony RX10 IV will give you a lot of flexibility considering this will be your only camera during the day. RAW shooting capability
RAW files contains much more color information compared to JPEGs, and gives you more room for post processing without significant quality loss. They provide wider dynamic range and option to recover shadow and highlight clipping to some degree.
Medium size Body
With relatively smaller body compared to DSLRs and better ergonomics compared to Compacts,Sony RX10 IVis a good compromise between size and functionality. Average sized 1″ (13.2 x 8.8 mm) sensor
Sony RX10 IV's 1″ (13.2 x 8.8 mm) sensor size is ideal for many street photographers as it provides a good level of low-light performance and depth of field control while keeping the camera body small.
Carrying this weight all day may not be very comfortable for you. Body Thickness 145mm
With a thickness of 145mm,Sony RX10 IV is not a pocketable camera for sure.