These two routes share the same anchor up top. The last five times I've been to Sunshine Wall and approached Pony Keg with intention of leading it there have been sportos on Ripsaw. Even if you build your own anchor up top, oldschool style you still have someone only four feet away from you and that can be unnerving.
I couldn't take it anymore and went up there and said, "excuse me, I'm leading Pony Keg, I hope you don't mind". About the time I was ready to go, they had pulled their rope and were clearing out.
Now I understand the reason why Whipsaw was chopped three times. When I first heard about it by reading it in Yoder's guidebook, I thought, how dare they, the cad's!. Now I think, yes, I can see how someone could get pissed off when they can't get on one of the best trad lines at the Coulee- one for which the FA predated Ripsaw. I'm not saying I'd do such a thing as chopping a route, but that I can see both sides of the issue now.