A little review... hope I don't hurt anyone's feelings...
The '3 sisters' route was pretty lame. Yes, there was a couple decent sections for maybe a mile each at a time - 337 had some tight stuff and 336 had an area with newer pavement that was nice, but that's it. Most of it has no sight lines as the road is cut out of limestone. There is no shoulder either. Some nice views. The road was pretty choppy and bumpy for the majority so it wasn't a very comfortable ride. The road surface that they use is not very grippy either, not good for confidence.
I'm in San Antonio and the road conditions here are just terrible for a motorcyclists. I don't know if the roads are just plain dirty and oily or if it is this large chunk chipseal/tar that they use - but holy crap is it slippery. I learned right away that you cannot have fun riding around this city, your front tire will SLIP out. I've gotten to the point where I am having fun making the rear tire slide around. It's pretty much like riding on wet roads all the time, but they're not. Even my boots slide when I am stopped. Maybe it is the heat.