I sprayed our backyard fence on the weekend. We had some old sections of fence which didn't look great, especially near new boards.
The spray gun was very quick and easy to use. I used Dulux RapidFinish.
Very happy with the results, although not sure we got the colour right. We were expecting more of a darker grey and less blue/purple tone.
A couple of after shots:


Example of the fence before:

Now we need to get planting in the garden!
Jason