Thank you for this comment!I wanted, more than anything, to love my 554 when I got it. But, I couldn't get over the tiny field of view so I sold it and went back to my 664. I only use a spotter to get a better look at what I've found with my binos, and even at that I still found the 554 miserable to use.
I'd been kicking around the idea of going to the 554 because I'm not happy with the lil Vortex spotter since I wear glasses and to use max magnification I actually have to touch my glasses upon it's eyepiece. Because I DO NOT want to have to remove my glasses in the field, that's just begging to drop them. And when that's happened, this one lens pops out then I gotta fuss with popping it back in, all with blurry vision. I do always bring a backup pair of glasses though just in case. But I like my "hunting glasses" the most. Their BiFocals I had the optometrist specifically skew the Rx geared toward distance viewing. And reduced the amount of real estate the reading part takes up since I'd only need that when processing the animal. And the size of the lenses are such that most bugs can't get underneath of them for it extends up to my brow and downward to beginning of my cheek bones, nice wide unobstructed viewport area! There almost no frame in my FOV! So I'm walking around with magnification even before I raise up some binos!