I usually don't bother with the Swallow because by the time I'm about to get it, I've usually got a better sword handy anyway. I might have taken it once for the sake of completion, but usually it's the Safe Helm for me. I usually only take the Prism Helms myself because I tend to always go through Black Omen multiple times so I may as well get the amount of Prism Dresses I need while I'm there.