My personal opinion is that the big wheel lock is a hideous fad, like the squatted pickups, but to each his own i guess.
They're fine if all your riding is done down to the local Bike Night and back. On a road machine, I want something that I'll have half a chance of finding spares for if I get a flat ten states over.
One of my pet peeves with the later-model FLs - especially the Road Glides. I've ridden many model years of that bike and there's simply no reason to hang a skinny-a$$ed front wheel off the thing.