well i went to last yrs show it was my first time and thouroughly enjoyed myself even though canon wasnt there, theres hundreds of stalls and loads to see and watch ,as for bargains there are some items for 'show price' prices but i have to admit if you dont eally need it ,its not really a bargain as such ,i went down there looking to get a colouromiter so yeah i got it cheaper but not that much. still it was a good day out and if ive nothing planned and not workin ,when its on ill be there.but i wouldnt be to upset if i didnt make it this yr.btw the bars not bad.lol although if you want to compare a few models in 1 area together i.tripods/heads etc it good for that as most manufacturers have then set out side by side where you can play with em and sigma had there lenses there to try out.
edit...
as for taking camera down..not really worthit..there were a cpl of models but that was about it.lol