I know the feeling. It is like being the Last man standing when the battle is finsihed. When PCP finally went under, I felt lost and alone in Tribes. I was lucky though, my skill and such was well known and I was asked to join many of the top clans. I opted to go with MS because one of the founders of that clan was an ex PCP member who I knew to be a major Tribes junkie.
I have a lot of respect for SL, as it was from what I have heard, a damned fine game on any scale. I wish you and your friends the best in finding a new game to be a team in.