Hi,
I did the landing as planned and came back to the US to continue my current job. For soft landing, I flew to Toronto and did my landing at Toronto airport. There was no rush or crowd for immigration process, so my process got completed within 15 minutes.
Upon landing, we showed our COPR at the immigration window and were redirected to a different section for landing procedure. The officer there saw our COPRs and asked us a few questions as to how much cash I was carrying and where was I going to stay. Then he asked for a Canadian address where the PR cards would be delivered. He also advised me that I do not go out of the country till I got my PR card as otherwise I would need the PRTD and would need to get the one time entry visa again, which could be long process.
However, I had to come back to continue my job in the US. Hence I stayed there for a week, applied for and got the SIN number during my stay.
Upon returning, I also started looking for jobs in Canada while trying to work with my employer in the US for potential transfer. My employer did agree for the transfer and finally in August 2017, I decided to move for good. This time, I drove in a rented truck across the border and hence did not need a PRTD.
See the below link for my detailed experience on crossing the border in a rental truck:
https://www.canadavisa.com/canada-immigration-discussion-board/threads/crossing-the-border-in-rental-car-or-truck.511124/#post-6329331
Hope this helps and all the best!!