I have no desire to change my race or profession so can I do anything useful with it?

If you are going to complete the mission, just save it in case you desire to change at a later date. Besides that, Dan may design missions or other tasks that require a profession change to some newly created profession at some future time.

But isn't it raidable?

It probably makes a groovy paperweight for the desk in your hold... at least, I am sure that mine will when I get one after all...

I am sure that it is as raidable as any other artifact in your hold...

lol I might be skipping out on it right now (setting up for combat at last and need a lot more decking to do it right). But so long as it comes back (which I think it will) ill do it, use it when I see something that only one race can do, then switch back to my current race if I do not go for another.

So with the glaviz device you become a glaviz or zolazin?

No only another race you have unlocked and I have no idea why you brought this back up its a year old and really no reason too