Creating nomad characters costs ooRP money. I see no reason as to why playing a Nomad character means it should be an ooRP investition without ooRP regains.
It is also a good compromise for us as a faction, as we have pretty high demands compared with other factions. While there is no need to sign up as Vagrant (or for the BB, Lesser Vagrant), people can earn a bit more money if they do their kills while representing a Vagrant ship. It's easy to say this is a means to the end, but to us, this is a way to make a clear cut between people who want to play Vagrant for the sake of PvP logging and who wants to actually play the Vagrants as we would like to see it, with the biggest possible RP ambitions. I believe there is not a single faction that hasn't players that log only for the PvP. Well, except UN| right now.
I do think it is better to encourage people to play alien instead of disencourage them by the fact that playing a nomad character has not a single mean to re-earn invested money. ooRP means for ooRP motivation, and we get more in touch with the indie nomad playerbase, especially if they sign up as Lesser Vagrant.