I understand employers overlooking B4A developers if they already have java production going. That said, B4A does produce native java files that can be edited, but that would be a nightmare in a production environment. There are a LOT of folks out there that know BASIC. I suspect a lot more know vb than know java, so there is a very good pool of potential programmers for a company that is just getting into Android apps.
Just some random thoughts from the owner of a software company.
--- Jem