We use Frontpage too -- but most of us prefer Dreamweaver, and notepad, and we design in-house for a University.

I can only relate to how many times members at my msn group, will ask for help on the board to unscramble a page created using Serif.  For people that know some about scripting, the program doesn't present much of a problem.  But for people new to creating web pages and new to writing html -- well that's the group who usually ask us for help. 

Of course, each new version s'posed to get better -- so maybe the most recent version of Serif is as you said above, and every web designer has their preferences.  People brought up using Frontpage from the beginning will have less problems with it than people starting out by handcoding, or using some other product like Dreamweaver.