Flats on a Darkside

Well I haven't been on here in quite some time, but I'm just trying to gather some information. It seems when you don't have to worry about changing tires all the time you tend to ride more and forget about blogging. So since the last time I was on here, I had an '08 victory Vision that I darksided and ran the Bridgestone Potenzas on and now have since traded bikes. Funny thing I never got a flat while running the Potenzas so I thought about going with same on the '15 Victory Cross Country I have now, but got to wondering about running a run-flat. For those that have the run-flats on their bikes has anyone actually gotten a "flat" and did you have it fixed, and what did it feel like when the tire actually went flat? I was wondering as I was contemplating a trip to Alaska and wondered about putting a run-flat on rather than the Potenza.