While I can't speak of the agents of today, I can give you my own past experience:
I got to know my local field agent back when I was engineering a station in Southern Connecticut thanks to my involvement in the New York chapter of the SBE. While the FCC had their job to do, they were fair and accommodating. They made a point to tell us engineers that if you called them to let them know you were going on vacation they would not pull an inspection on your station while you were away. I thought that was pretty decent of them. I never had my station inspected during my tenure as engineer but the engineer who took over for me had the pleasure of their presence.
Of course I can't say how things have changed since then, but I often wonder about it. I was forced to turn in a pirate that was willfully interfering with a licensed station I do work for. While they were never able to apprehend the pirate in question, I wonder if these same agents would otherwise hassle those who are operating legit Part 15 operations. I plan on installing a couple of these stations in the near future and I know of at least two individuals who currently operate Part 15 certified transmitters as a hobby. I wonder if they will just give them trouble "... just because" or just leave these hobbyists alone.