Basically all the "rifles" have the same holding animations as the assault rifle. Kinda disappointments due to the fact that they said there was going to be double the amount of weapons from fallout 3. I just don't want to see the same thing over again, and to add to that the running animation for npc's holding guns do look a little... silly. There legs are kinda flying and the combat style doesn't look like it's changed. For example, when raiding a camp of Caesars legion, a dude just runs into 3 ncr guys and gets surrounded.... I'll still buy it but I'm just saying. I really hope they do polish some of the stuff I've mentioned.
im fine with how it is, but if they end up making more animations im cool with that too, and you got to remember that its not finished yet what tthey showed at E3 was only the alpha build, they still needed to do beta build, and so right now the devs are just polishing the game working out bugs making everything shiny so dont worry
and bethesda wont allow them to release the game if its not up to standard