If you've got to remove the front wheel, then I'd just lock it up like any other full sized bike, it's just too time consuming and too much trouble. It's too big to roll around inside shops, heck, the helix at 24" is really pushing the limits of what most shops would allow but the perception of the smaller wheels might be good enough. Then there is the riding experience - Changebike might be a great ride but, for me anyway, I have found urban riding is so much better with a smaller wheel. The bike is more nimble and easier to accelerate from all the stops. It's just all depends on what your needs and wants happen to be. But I don't think there's any way the Changebike and Helix are interchangeable in terms of usage so it's just not a valid comparison. Changebike is probably awesome but I doubt it has the right appeal to folks who bought the Helix.