hmmm interestin lil invention...though im all for making plastering and all its forms as easy as possible,I think this device looks great in the promo video but in the cold and harsh reality of price work,im gona still favour my good friend Stanley and his ruthless lil blades....
Like Flynnyman says,when do you have an empty room wit your boards laid out on the floor in the middle? ( you wouldnt want that scenario anyway due to the amount of floor space it takes up,unless u workin in a BIG room)
Also,like said already,when you look at the cost of it,then the trouble of finding replacement blades and the pain in the arse of where you leave it lyin around incase (and high probability) of it bein swiped.....in 'dragons den' esq fashion,'i wont be investing!'.