With a perfect solution for every project and being so easy to use – there is nothing you can not do when using Loctite. So, the answer to every one of your questions becomes a YES.
Will it hold? Is it that easy? Yes. Is there a glue for all on my jobs? Yes. Does it stick to metal? Yes. Is it also for professionals? Yes. Can I glue these two pieces of wood? And another yes.
Nothing else to do but Say Yes to Loctite.