It's more to get it started I think than to properly tighten stuff up, once the nuts are on the thread it should be much easier to get your proper ratchet spanner in there are tighten it up
I have huuuuge hands & wouldn't consider using anything like that (it wouldn't fit me anyway) but I cannot see how you would get the bolt started in such a confined area as you would be unable to turn your hand enough to get it started.