Having had both, the stud works much better on the SLC's than the EL's. The issue with the EL is that the stud is so far forward on the glasses whereas the SLC is more mid-ship. This becomes an issue when you are glassing on a tripod and changing the elevation of the view as you have to change the tripod height much more with the EL's than with the SLC's because the height of the ocular lense moves so much more (hope that explanation makes sense).