I never get nauseous either. I grind to a powder and toss and wash. I usually have some yogurt to chase it. I think once it is powdered it is very easy to take. About 2 hours in I take a few tokes and C'ya.
My last cactus trip last Fall was strong but I was waiting for it to be over. And here is why. My wife had went to Canada to visit her parents, both in a nursing home. Her mother had not eaten in 2 weeks and was basically dying. She had severe dementia. There is that story in TIHKAL where Ann was tripping with her friend Sam and watched a dog get hit by a car. That feeling of unsettledness as they waited for the dog to die. Nature was unsettled and almost holding it's breath. As soon as the dog passed on Nature continued and there was more of a peace. So I attribute my last cactus trip as an extended type of almost holding my breath until my MIL died. It took her till March of this year but she passed. So I wanted another cactus trip as all my others were beautiful, peaceful and enlightening. This last one has strong visuals but I was so unsettled so it was me that could not really enjoy it.
I had planned on a cactus trip this week as my wife is in Canada seeing her father. But the weather all week has been foggy, drizly, schmeazy and unsettled not in a good way. Just a blanket of humidity and fog and no air it seems. So I am going to pass. I don't want to do it just because. Not that I don't trip on foggy cloudy days it's just that the last few times were like that and I live across the street from a huge state park and I want out! I think I may wait till the Fall for a cactus journey. I still want to do something. Maybe 2C-B. I really like it but I really need one of the classicals with some good weather. I can not even see the mountain outside my kitchen window as it is very foggy and has been the last 6 days. Grrr. Oh well. I'll read trip reports.

Being older I feel I'll pass more than I will just do something because I have the time.