Brother Juan, that is an excellent idea. With our growing list of allies acquiring a diverse range of weapons is something we can all look into. Of course none are up to par with our own glorious Corsair weps, but it is nice to see different coloured fireballs ruining our enemies.
As for Gaians, I understand their scientists have made recent breakthroughs and produced some very fine weapons. Unfortunately being photon based they travel at higher speed, and you may find some accuracy problems when mixed with our neutron-based guns and most importantly shield busters. YMMV.
Just be careful when sourcing your weaponry... be mindful who manufactured it, and always check serial numbers to make sure it is compatible with your ship systems. You don't want to shell out alot of money for some gun, only to have to chuck it in the scrapper.