Joint protecters- Are to protect your pin from a drop while taking your cue out of the case.. What if you drop it just after you removed your joint protecters?? (I understand their use during transport)
The Uni-loc joint- Why is the speed in which you screw & unscrew your cue important? It's not like you have to fight someone with it after every shot.. A regular pin takes what 3 seconds longer to screw & unscrew? You screw it together play a 45 min match WTF?!?!?
You may have a point about joint protectors, but as far as uni-loc joints.... if it can do the same thing as a regular joint but also add a small convenience, then the real question is why not?