Mine was successful... so far
I've been in the US for 13 of the last 14 years and over the years I've obtained 6 different TN's and I've been on an H1b for a total of 8 years. I was voluntarily out of the country for 1 year about 5 years ago, which reset my H1b clock.
The last status I had was a TN and that was after I was married to a USC (we were still deciding what country we'd live in) and finally I filed for my GC. My EAD was approved 2 weeks prior to my TN expiring and now I am just waiting for my GC Interview in 4 weeks.