Just as a hint:
One of the core team members of Webpack, Sean Larkin, is on hashnode AMA today.
On topic: Gulp and Webpack don't neseccarly share the same goal/purpose. Gulp is a Task-runner like Ant. Webpack is module bundler. So if you do administrative things that has nothing or little to do with bundleing and may transpiling Javascript and around that, may Webpack isn't the right tool for that. So I think you can stay for that on gulp since it is not going away completely anytime soon and at least I'm not aware of a "better" alternative to it.
Idk it might help if you specify more what are you doing with gulp