http://insomnia.ac/reviews/xbox/gunvalkyrie/
Excellent choice and review Alex! I remember following Gun Valkyrie when it was originally slated for Dreamcast, and then became one of my deciding factors to buy an Xbox. I also remember discussing the game after it came out on the old atarilabs forum since Lawrence was the only other person that had an appreciation for it.
If it wasn't for those god damned locked controls I would have really liked it, but instead I had to get rid of it due to carpel tunnel in my left thumb/wrist from all the boosting. I swear that game would have been a LOT better if they allowed you to remap the boost to one of the triggers. I even went as far as hacking a Mad Catz Xbox joystick to try and remap it physically... but never finished the project.
I remember having pains in my thumb/wrist the entire day after playing it for an hour. Maybe it's easier to play on the smaller Xbox pads once those finally came out (or some 3rd party pad). I now feel ashamed that I gave up on it, and sold/traded it away at EB Games for a mere $5 or something (LOL).