They are quite noisy, but you get used to it. And I always found it quite reassuring, while DH learnt to sleep right through
Just see how you go
Ditto to that. My H only gets lightly woken when baby wakes, but he can drop off to sleep again while I feed so it's not that bad. Sometimes he's really tired but he works at a desk so it's not like fatigue will kill him... just makes him less productive.