Developers are always going to combine approaches to what best suits them. Using abstract, extendable naming conventions and abstracting out each module/widget into separate files organised into folders for compilation via LESS or SASS is an ideal combination for me. I think every front-ender needs to pick and choose ideas from multiple methodologies, otherwise there will always be issues with maintainability when building large sites.

More important than any one methodology is consistency and documentation, no one wants to pick up a project with 'genius' abbreviated class names without some example markup!