I love [name_m]Pip[/name_m]!
[name_f][/name_f][name_m]Pip[/name_m] [name_f]Isabella[/name_f] is sweet and balanced [name_f][/name_f]- though I do find the repeated ‘ih’ sounds and the p/b blend into each other.
[name_f][/name_f]I think [name_m]Pip[/name_m] could work [name_f][/name_f]- I know (of) a few people who use it as their ‘fulltime’ name (as in, it is a nickname but they use it exclusively and professionally). Kind of similar to how [name_m]Kit[/name_m], [name_f]Lou[/name_f], [name_f]Rue[/name_f], [name_m]Jem[/name_m] etc could work.