A safety vest can always go over a coat or jacket so you still have plenty of options. Workwear shops usually have suitable clothing which complies with the relevant standards. I used to have a waterproof coat in navy blue and light green with luminous strips which was great for night freight.
I still buy from work clothing suppliers and occasionally army surplus shops, usually you’re getting a hard wearing item at a reasonable price. These shops are patronised by people who want durable clothing and aren’t interested in paying for fashion.
King Gee have a “Cool Max” fabric range which is great in tropical climates, looks smart and costs about half of what you would pay for something similar in a fancy camping shop.