take it as the ID says. nomad lasers = certainly a corrupted char / infested char
nomad blaster/ nomad cannon = origin of the nomad war, looted from a "corrupted rheinland fighter" or something. they are not organic... they have a nice twin barrel gunmodel, instead of a blue jellyfish model ( like the capship turrets )
all those that hunt nomads on a regular base as their RP can of course use them. they are for those that like these weapons. they are not everyones choice .. but if someone likes them and their RP works for it... there is no reason why they should not have them.
i do not think that public nomad weapons are for pvp focussed people. they are part of certain parts of sirius - and those that spend their lifes there can use them.