You can tye in or clip into the rope for glacier travel. It doesn't really matter it is your choice. You may as well know both methods. The tie is great if your short of gear or you don't want your guests getting away. Clipping in eases the process of getting in and out of the rope (climber speak there, sorry)
Want to master Microsoft Excel and take your work-from-home job prospects to the next level? Jump-start your career with our Premium A-to-Z Microsoft Excel Training Bundle from the new Gadget Hacks Shop and get lifetime access to more than 40 hours of Basic to Advanced instruction on functions, formula, tools, and more.