Thanks, Corvo. I specifically didn't have any issues, but I was bringing it up because a couple people brought up issues on a detailing forum and there were questions/concerns abound.
Here's what I've learned from asking questions and from learning things the hard way:
1. There's a window of time between C1 and EXO v2. Rob has told me this is 3-12 hours. I applied my EXOv2 around 8 hours, because that's just how it worked out. I experienced no issues as a result of this.
The window of time is based on the conditions you are applying in. In 68 degrees with mild humidity, you can apply EXO after about 4-6 hours. We also have people baking the cars in a paint booth and the C1 is cured in 45 minutes.
2. You really have to look at your application from multiple angles and under multiple lighting conditions. I think this is where people also get their problems. With my last application, it ended up raining and I didn't have as much light in the garage. I thought I had thoroughly checked everything after applying C1, but there is a small area in the middle of my hood right above the rear view mirror where there is hazing -- the hardest area to reach with my arm length and right in the middle. I didn't buff it enough to level it out and there is some hazing there. Hard to tell, but I see it all right.
I recommend using 3 microfiber towels after applying C1. 1). to make sure that the c1 is completely level and total coverage is achieved. 2). start to buff off the product just like you would a wax or sealant and 3). to go back over the panel and get the areas you can't see. Always work slow and do one panel at a time. Take the time to do it right rather than do it fast.
3. I had a nice C1 hand print on my windshield from when I must have gotten some C1 on my glove. Fortunately it was the windshield and I could polish it off.
C1 really isn't meant for glass. EXO is fine though.
4. The marring is very real if you apply to much pressure when buffing.
General rule of thumb for proper detailing, it's better to make multiple light passes with your microfiber rag than it is to put pressure on your rag just to get the excess product off.
This time around it I felt pretty confident, but there's definitely a curve.
But, when you get it right, it looks beautiful!