Would it even be allowed?

I thought I'd read somewhere that pushbikes are banned on the mountain section of the course during TT fortnight. I tried to Google it but couldn't find what I thought I'd read, so maybe I'm wrong.

What I did find was this account of cycling the course during practice week - gives some impression of what you'd be up against.

http://my-tt-lap-2007.blogspot.co.uk/

I quite fancy cycling around but wouldn't attempt it during TT or MGP.