From what I've seen, your diet should be ~60-70% fat, 5% or less carbs, and ~25-35% protein. Definitely not 95% fat.
> I had several instances where my dinner in a pinch was melted down cheese and half-n-half. Your diet basically becomes cheese and avocados with some, but not too much, salmon or chicken
What about vegetables? I ate a lot of salads when I did keto. I also ate a lot of fattier meats, such as cured italian meats and ground beef. No reason to eat super lean protein when fat is most of your calories; buy the cheap fatty stuff and enjoy it. Also, eggs? I was having an omelette every morning.
> I also wonder if it's possible to work out while doing keto
It's very possible: https://www.ncbi.nlm.nih.gov/pubmed/22835211 but I doubt it would be if you're not eating any protein...