>>I wear glasses, so even with my eye to the finder, the glasses gap my eye away from the eyepiece and let in the glare.
I have rubber eyecups on my viewfinders, plus an eyepiece 'booster' to bring the diopter adjustment to the point I don't need my glasses. When I'm ready to shoot, I 'scoop' my glasses up onto my forehead with the eyecup. Works great - although it might not if I had to do a lot of menu diving.
Another Tilley guy here. I wore out one of their Nylatanium (I think that's it) hats - they sent me a new one.