SigSig,
I looked through the thread and didn't see a suggestion for the invisible holster...the SmartCarry.
http://www.smartcarry.com/index.html
Wow...just went to their website to get the link...it is MUCH improved over the old site.
But back to the product at hand...I bought one of these holsters a while back and I just love it. I feel like I can carry pretty much everywhere and nobody will notice....if they do, they'll think its something else. I have worn it everywhere from on a jog (it felt completely secure the entire time) to on a 3 hour drive (didn't get uncomfortable after being in the same position for hours on end). They have some excellent options now too...mine is just a plain holster with the mag pocket, but you can get a security pocket on the back, two gun holsters, all kinds of cool stuff.
Here are a couple of photos of me after I got back from a run (hence the clothes...no need to make fun.) You can see that there is something there in the side photo...and barely in the front photo...you have to be looking for it though.
Also keep in mine I'm fat...so my gut is pushin' the gun out as best it can to get people to check it out and I'm carrying a full width Steyr M9-A1 (stack and a half...~1.56" w/ the Hogue grip I have on it)
Just something you might want to look into...the draw will be a little slower than a strongside holster...but can get very close to the same speed with enough practice!