I'm pretty familiar with psychotropics but never heard of Invega. Know what you mean about drowsiness at work---when I first started Lamictal, it made me so sleepy that I could barely keep my eyes open if I sat down at my desk for more than about 15 mins. I'm OK now, even with the addition of Zyprexa (which I take in teeny-tiny amounts and only @ night and PRN for mania). But those early days on the Lamictal were pretty scary.....I probably shouldn't even have been driving then.
Wouldn't it be great to have a medication that takes care of psych disorders without making you a) gain weight, b) feel sleepy and tired all the time, c) cycle in and out of unwanted mood shifts (in some people), and d) cost an arm and a leg? Yep, I think so too.