I finished the game. I was playing on the NCR side, but I also installed Yes Man as the new head of Vegas. I was very disappointed that the Vegas/House/Yes Man story ended up having nothing to do with the finale at Hoover Dam. I assumed that the finale would be on the Strip since it's this huge location you take forever to get into with all those loading screens. But there was never any action there. It's like there were two completely separate main missions that never touched each other. I was hoping Yes Man's Securitrons would show up to help at Hoover Dam.