Thanks!

I've been doing bench dips up to now (in the fitness room), combined with an occasional mostly static hold with ordinary dip handles, so I'm sure the rings will be a huge stability challenge, and I'm sure keeping my feet on the ground and then taking the weight on the rings gradually will be the way to go.

Still, I'm really looking forward to it—being able to put the rings and my jump rope in my backpack, and go anywhere and get in an awesome workout.