OK, here's the report:
I took it into the LBS this morning, a small place but not the place I got my Rivendell. Got it fitted, and I had already done a good job of it by myself! The bike is a good size for me, the seat does indeed need to be pushed back like I did, and the quill stem is extended as much as it can. I won't sink any money into until I see what I want to change, or if I like it. Nothing was wrong with it except he tightened up a couple things and lubed it. He said it looked like it had been sitting a long time.
The young kid didn't seem concerned AT ALL about me using it as an uban/travelling bike (from now on referred to as my Urvelling Bike). The young kid was very nice to me, but in a kind of "Yes, ma'am" way. I hate that... makes me feel old and doddering. But then an older staff walked by and said, "Wow! You don't see many of those any more!" and smiled broadly. So what I think I'll do is use the Riv for all my pleasure riding and errands, the Klein to travel with and keep at other locations, and I'll still ride my cruiser to places like the mall. It makes sense with its big basket, anyway, and the distance to shopping/movies seems real small now that I'm riding more.
I took it out on my normal loop, and it was just fine. I went up THE HILL, and forgot how the shifters worked halfway up, so I was "hammering" it, but it was just fine. The gear range is really nice! I mean, there are a lot of gears on it, and it goes really low. I really get a kick out of the brifters(?) and don't quite have the hang of them.
No twinges of discomfort. I wasn't riding too low, my neck didn't hurt. The seat was stickier than my brooks, so I didn't slide around so much. As I'm sitting in my chair writing this, I can feel muscles in my center back, so there might be a problem on longer rides. I'm going to take it up north this weekend and see what happens.
I had to watch the pavemet for vertical cracks and unevenness like a hawk, though, because the bike literally kind of jumps around if you hit unevenness. It's really fun to take tight little corners with it. It tracks well in general. It's well made. The components on it seem really solid. It feels very safe. I hate to say this, but as far as racing style bikes go, this one is probably more fun than my Bridgestone 200, which I thought was an awful lot of fun.
The aero bars aren't really aero bars, and you lose a lot of control with them, but I like them because I have to be light on my hands with them or they'll move. It's helping me keep my "3-point balance".
I swapped out the pedals and put on clips. They make them integrated now! It felt really* nice to have clips on again. On the Riv, my feet never feel secure. I tend to pedal on lower gears so I'm gentle on my knees, so I'm always pedaling kind of fast. It can get out of hand easily on gentle slopes when you don't realize you're downhill until you have to shift. I like* clips.
I kept the pedals in case I want to try clipless. Next shoe sale on Sierra Trading Post, I'll cash in my $25off coupon and should be able to get into a pair of shoes for about $40.
If you think about water animals, my atlantis is like a dolphin, my klein is like a minnow, and my cruiser is like a carp. They're all good.
I'll know more in a few weeks, but I think the Klein is going to be just fine.
Oh, and might I add that I got my hair cut yesterday. I told my stylist I needed a cut that would look good being washed a lot*, and that I was going to be wearing a helmet for at least an hour a day. She gave me a really modern* cut, and when I took my helmet off today, it looked cuter than it did before I put it on! Bravo!