Optimal Gulp setup on the project's dev server?

Question

gulp.js

Hey Toaster.
I continue to master Gulp and with the advent of a new question I immediately run here. There is a cool atmosphere and a bunch of knowledgeable people. So.
I created my own project template, set up the config, neatly laid out and painted everything. It is convenient to lay something out locally, or show it to the customer through the tunnel.
But at the current moment of time, such a moment is of interest. There is a live project, the project has a dev server. On the dev server, for a little bit of a front end, there was Grunt, which collected something from .styl files. Now I want to move it, put a bunch of Gulp + PostCSS.
But I can't even imagine what is needed there. It's not all local. It is logical that you need a watcher. And not one to watch and rebuild.
But what's next? Will it be possible to make a livereload? Which side to approach because of styl-files? What to do with Grunt?