I can only speak for how ketosis effected me personally. I could not lift as much when I was carb cycling. So I lost some muscle mass and strength during that period. But I was able to build it back up pretty quickly once I was no longer carb cycling.

After carb cycling was done I switched to carb backloading. I only ate carbs with dinner and ate like I was on phase 1-2 Atkins for breakfast and lunch. I ate a slightly higher amount of carbs with dinner on the days I lifted. I found this to be the best way for my body to maintain a healthy weight. I had enough energy to lift. I could see increase in muscle mass without increase in flab.