There's nothing wrong with belonging to more than one club and indeed many on this site already belong to more than one.
The only reason for the new site declining membership for a few is because of previous experiences with them and their use of the forums.
By this I mean because of their use in a certain way and everything being discussed degenerates into undesirable slanging matches.
Funnily this is the only forum on the Blitz site where I have seen that happen the rest seem to get by no bother and I believe it is because there was clash of personalities here.
So one member decided to set up his own site where this clash of personalities would not take place because those disruptive personalities would not be allowed on the site.
Those personalities know who they are and know the Peter (Glint) is running the new site.
He will welcome all interested persons except for the few disruptive influences and so don't be influenced by the minority here who think they only they know how wargaming should be conducted.
Gordon