Yeah it's a blast! It took me about a whole month to get really good with it, but it's worth it.
I never got the 'sick to my stomach' feeling... well at least unless I was hung over. Then again, I never get motion sickness either.. unless I am hung over.
I remember the first time I played after installing it, my squad was having a blast with dogfights down in a narrow canyon. We had a bunch of 109's and a few 262's come after us and yes I got my... well this:
but it was a blast! Now I can't play without it.
I will add though that in bombers and tanks, it's usually better to turn it off. I have a button programmed on my stick to turn it on/off and also to center it.