I am a Hobbs trench coat owner and say it’s worth it if it suits your colouring, overall style and lifestyle and will wear it most days.
The cut is good and they last well. I’ve had mine a good few years and worn it a lot but I’ve always worn a trench coat.
It’s not good if you feel the cold as they aren’t very warm, or if you can’t carry easily carry an umbrella due to windy weather or dog on lead type thing. More of a city look, not suited to country or seaside type walks or dog walks.
Obviously it and you aren’t going to look like the photograph, even the model won’t look like that popping off to the shops in the morning. Like taking a hair cut photo to the hairdresser for inspiration.
If you aren’t sure Sainsbury Tu and Uniqlo are worth a look, have done very good versions in the past and would be cheaper.