I don't use rubberslug, but I see a lot of 
galleries being moved there now.  I haven't had 
any trouble accessing any sites there yet.  I 
definetly like the look in general, but as 
someone said earlier, you don't have much 
creative freedom.  It really depends on how 
fluent you are in making web pages.  If you want 
to make your own, go with animanga's free 
service!  Hope this helps ;)

-Graham