yeah, LOADS of us have upgraded our stits with quality snowboard bindings, and it rocks.
youll get a good pair from ebay for around 30-40 pound.
pro jump do sell the evo 2 bindings now, which ive tried out and they not too bad, but i still went back to my drake snowboard bindings
that pair youve linked to are a bit like the evo 2's in design, im sure they will stop your feet from moving around and keep you well strapped in