What are the advantages of different locks for collapsible trekking poles?

Basically twist locks (in my experience) are a pain. They suffer from a number of issues:

• They're difficult to undo
• It's impossible to grip them with gloves on, this is a problem when it's cold
• The lock without careful maintenance can lock solid (had this happen a number of times to mine). This can be very difficult to rectify (especially without the help of a pair of plyers, etc)

The only disadvantages of clamp locks that I'm aware of are:

• They're newer and tend to be more expensive because of this
• They make the pole more bulky when stowing away
• They can come undone if you catch the latch

Generally, the mechanism is simpler and just less likely to foul up. You may have guessed I prefer the clamp to the twist lock, which is odd because both my poles are twist lock ones :(