As with any teaching tool they can be overused, and often are when they are new but I love my interactive board.
I also have blinds, fans etc, it need not be one or the other.
My subject, like many others is constantly updating so textbooks are often irrelevant. I often use my board to create page of a text book tailored to a particular class t a particular time, no textbook can constantly do that.
Most teachers do combine them with a traditional whiteboard, I know when we moved into our new classrooms there were not any teachers who just wanted an interactive board we wanted both.
My board has never been damaged even when teaching in very difficult school, I did however get my remote pinched but I soon learnt to out it away.
Interactive boards are not the downfall of eduction and to link achievement in one school soley with interactive boards is silly.
They don't stop children spelling correctly or using the correct grammar.
I am a teacher who embraces technology from discussing topics on internet forums with my pupils, to creating podcasts, film making, wallwishers and I still have time for regular spelling tests.