How does that deployment to WP works again? Despite I have a WP site for about a year, I still have no clue how can I deploy my posts/pages from a VCS.
I would be reluctant to give another service an access to my FTP (and other services do need it, it seems). On the other hand, is WP-specific API a big improvement? More secure or more reliable? I do not know – and I need to be educated even before I consider ANY of these services.