So, first of all, apologies to the chowhound who directed me to Jake's - I looked at the website and found that the restaurant is closed for lunch. The website is wrong. I was in the area anyway, so I stopped in and it was in fact open. Pretty quiet today, but open.
I had the lobster roll. It is very good - I admire their take on it. They just pile in fresh lobster, mainly tail meat. No messing around with celery, mayo, or whatever. You get a toasted bun filled with meat, and the mayo and lemon wedge come on the side. At $17 it isn't a bargain and I wouldn't ever make a special trip, but it is worth a stop if you are looking for lunch in the area.
Also, they sold fresh fish and the tuna ($14.99/lb) looked awesome.