Seems to me on short haul, commuter type, trains, bins are less attractive. Why bother opening and looking for open space if you are only on for a stop or two. However, if they were open racks, I think more people would use it since it is easy to see open space.
On LD trains, I think it would be horrible. Could you imagine being in coach, asleep in the middle of the night and people get on and start opening and closing bins looking for space? Plus, coming back to your seat, a simple glance up does not confirm your belongings are still there, you must open a bin. The opposit side of that, I guess, is it is less likely someone would grab something when walking by. Not a big problem, though.