I got forced by my employer to use a mac two years ago, and I had the exact opposite experience: the trackpad was so far from what I was used to (from reversed scroll motion, to the many accidental and undiscoverable multi-touch or smart gesture shennanigans) that I just hated it, and I soon plugged a mouse.
UX is a very subjective thing, and it depends a lot on your background: you're never going to feel instantly home when switching platform no matter how “polished” it is supposed to be.
The only unexpected gesture I had was the swipe back/forward a page (I've had the same issue on mobile as well) but I just disable this particular gesture. Which gestures did you find that you accidentally triggered?
UX is a very subjective thing, and it depends a lot on your background: you're never going to feel instantly home when switching platform no matter how “polished” it is supposed to be.