I was building a bike to sell and threw on a pair of non-lock on Oury's I've had in my parts bin for ages. I rode it around for a bit and realized they felt much better then I remembered without the plastic sleeves that are built into lock-ons. That got me thinking - are there any lock-on grips that don't use the plastic sleeve? Ideally something that's fairly thick like an Oury and that lets you run your hands to the end of the bar? Besides the single sided clamp grips, I've seen some grips are now are using compression plugs on the end. I'd think that would allow you to try something that fixes itself at either end of the grip and could make it possible to do away with the plastic sleeve.