The Swift LLDB should be a superset of the llvm.org LLDB, so (bugs notwithstanding) what works with the llvm.org LLDB should also work with the Swift LLDB. Note that we may not do any testing with Python 3, so be sure to let us know of any issues you run into.
As a general not for packaging: The Swift LLDB should be a drop-in replacement for the normal LLDB since it can do everything regular LLDB can do + Swift.