Hmmm, firts of all, I don't think a clan leader will have an argument with another clan leader if you decided to join their clan. Of course, he might (i should actually say will not but there might be some very small exception) not like the idea. Also, the clan leader that is recruiting you might find out from 'un-named' sources (how this happens i dunno, but everyone knows everyhting basically) that you like to join and leave clans and they won't accept you. A member that joins and leaves clans as he pleases is not a very good one.