If you are shooting a project of course it makes sense to record the whole thing using the same Photo Style, so if one scene will need the dynamic range that V-Log offers it makes sense to shoot the whole production in V-Log to make it easier to match colour and contrast in the final film.
When you have V-Log or V-LogL there is a temptation to use it every time you record a clip of video, but it pays to have a think first about whether it really is the best option. In a lot of situations a normal Photo Style might do the job just as well, and often a flat profile such as ‘Flat’ and ‘Natural’ will offer more than enough flexibility for minor tweaks in post-production. It is in challenging lighting that V-Log comes into its own and becomes essential for creating a realistic final result.