Speaking from experience, I'd say it can go either way. I've been in an online relationship (thru Match.com) where it turned out the guy was telling me what he thought I wanted to hear and I regretted letting things progress too fast. But, I lived and learned. .
The next relationship (thru Match.com) I had, I was again very clear about my morals and values and listened to him state his. Then I made sure to allow enough time to satisfy myself that what he said matched what I saw in him. God knows I wanted to hop into bed....errrrrr....a committed relationship (thru Match.com) with him by date using Match.com 3 or 4 but, I didnt'. It felt so good when he didnt' push (even when it became apparent he was interested too). I felt/feel very respected which in turn makes me like him even more. .
My advice is to go and have fun...don't get all wrapped up in the technical details just yet! Just make sure you are comfortable that YOUR criteria is being met when and if the time comes..
You have to give it time, get to know him, and also in time get to know the people in his life.
Only time will tell. I am in the same boat as you. You 2 will just have to go slow and get to know each other. Keep it in public places for a while until you do..
Really knowing someone does take time, and seeing them in different situations - i.e.: how do they treat waiters, other service people, how do they talk about exes, etc..
And at some point I imagine you would also meet each other's friends, family, etc. There's no rush but why are you assuming there's a good chance he's misrepresenting who he is? Have you been hurt before and you're operating from that?.
Yes, do your best to chill, relax, be in the moment. Anxiety is all about the future. When you stay in the moment you are actually living your life!.