[pmontra]

You follow convention because the other developers have to read and work with your code. You also follow the formatting conventions of the language and of the project.

As a polyglot developer it feels a little weird but it can't be helped. The mix of camel cased and snaked cases languages in the same project or in the same file is inevitable sometimes. Think a JS script tag and Ruby <% %> inline code in an html.erb file.