Homeowner Question: Is my modified bitumen roof installed correctly?

Yes, ABC is eventually who they contacted. All the Joses on the job were just swinging hammers, project management and ownership come from GC and insurance backgrounds. I chalked up the unfamiliarity with tapered insulation to being "residential" contractors. Live and learn.

I have a lot of pictures here: http://imgur.com/a/3NhKm

I wasn't sure of the capacity of the upload function here and already had that album up. If I need to, I can upload them directly.

As for appearing like shingles, I just meant the texture & granulation like roll roofing, as you mentioned. The "smooth" modified bit is what I've never seen and is why I'm reserving judgement until I hear from pros. However, "tough" is not how I would describe this material. I don't expect to leave permanent footprints standing on the membrane for a few seconds on a warm but not hot day.