Operating within the law in bretonia and outside it in liberty seems to me to be something of an issue.
Bretonia and Liberty are very closely tied (especialy with the new Treaty of Curacao) and would share information about crimial activity, which would include a mercenary company working for the lane hackers and rogues (who are considered hostile by the bgrets as well).
Extrodition treaties and so on are only a tiny roleplay step, and on infact that a few of us have thrown around recently.
I suggest if you want to be unlawful in one house you'd best be unlawful in both.