If you are exercising on a caloric deficit, you are going to feel constantly tired and shitty. I find it way easier to just be on a caloric deficit.

it's so much faster to do both at once though, and you retain more muscle mass during it and so on

so long as you can live like a monk and hit the gym every night for a few months it's pretty good. this is dependent on you being able to stand being hungry and cranky and going to bed exhausted for all that time though

this is not true; I do extended bikepacking trips nutrionally similar to the GP's experience and you feel amazing. Maybe your first time or the first day can be tough but the human body loves to move and consume. I think a good frame of mind is you're a high efficiency furnace pumping out the heat on a very cold day. but this machine actually heals & improves the more it's used!