For certain, easy-on easy-off is the best way to go. Still, I would never take a bike on active tracks, no matter how fast I could unmount it. Trains are just way faster, a collision is most likely fatal (for me), but if my bike causes a derailment of a passenger car or some toxic spill... I don't think I could even die with myself! But why would I, if there are so many inactive tracks around.