The KL1 is about 8mm longer then the Exe Bezel.
I find this is actually very helpful for my use of the E1e+KL1 because I get even better grip and my little finger doesn't naturally rest on the rim getting in the way of the beam.
I should mention that this increased length on the E1e+KL1 means that when pocketclipped, it naturally rides a bit differently. The strength of the clip means I've never had it work loose and don't consider it to be an issue, nor a problem. However, when wearing suit trousers (light-weight material) I've found the E2e+KL1 rides far better.
Al