For what it is worth, I switched all of my pro travel work to mirrorless several years ago. I kept the DSLR rig for home work for a couple of years because I just couldn't let go but eventually converted to ILC completely. My travel rig shrunk to half the bulk and less than half the weight. If I was a fashion or billboard shooter, I'd have to stay with the full-frame but I am not. For my primary work in travel, landscape and nature, I'd never go back.
If you decide to make a similar jump, be sure to do your research. All ILCs are not alike. I'd suggest looking at Fujifilm, Sony or Olympus - or maybe Panasonic if you do much video. Canon and Nikon haven't really gotten into the fight yet.
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