If you're playing a Small Guns char,just give Vic and Cassidy the Pulse pistols, and Marcus the Pulse Rifle. Plus the point is you need *no* skills to get those guns. Anyone can find the manhole behind the Doctor's warehouse. You only need skills for the main area, which has less powerful weapons in it. Although as you suggest, the traveller's probably the weak link here. If you made her appear only in the SF and Vault 13 areas then EPA would be balanced. That or have the EPA location given by an EPA leaflet found in the Military Base or something. However, the EPA has seeds for Arroyo. Since when you get to V13, Arroyo becomes a smokin' crater it seems to make more sense to have it available around New Reno in the plot and include weaker guns.