Thanks for the report.
Running flat has been my flat-tire plan all along. Instead of carrying all the flat tire repair tools and supplies, I was planning to ride on the rims as far as I could.
Since it's so hard to break the bead on the rear tire, riding on a flat tire, very slowly, shouldn't be a problem.
It's good to know it is possible on the front tire as well. Looks like the K270 should be my next front tire.