Even a kayak will have difficulty at some states of the tide. Certainly passable at high tide.. and boats do go that way .. when I last did it.. I found it quite unnerving dodging all the columns of seaweed .. wondering if there was a rock below them.
If you are new to it.. I suggest give it a miss and go through the Sound instead.
If you are planning to go to Tinkers Hole at Mull from down that way..passing the Garvellachs.. etc .. there are some interesting tide races that may take you by surprise. IMO ..Not a place for a noobie. You may know that though..so just ignore my comment if you do.