Originally Posted by PistaRider311

Heavy wheels are harder to get started, and once they're going, they're harder to stop. This is good if you're cruising in a wide open bike lane, because the heavier rotating mass smooths out and inconsistencies in your pedal stroke (there are always some). This also means if you are going to be brakeless, it will take longer to slow down, unless you're going to be skid/skip stopping, in which case the effect of the extra weight will be negligible (for slowing down, anyways).

EDIT I think if you're just itching for something different, sell the wheels, buy a lighter pair, and strip the decals on your Pista. It'll save you money, and you'll be able to notice a difference. This is my next project. The all-chrome frame with no decals looks pretty slick with some gum sidewalls and track drops, IMO.