those are fantastic tires but they suck for flat protection. I have added a liner to them before and they really work well after that.

W/o reading any other posts I'll say as one who's used them. They're fine for low psi mtb street tires, but for high pressure road tires there's a tendency for them to cut into the tube over a period of time causing a flat or blowout. Get some Schwalbe Marathon Plus' and your flat worries are over for about a year or two depending on mileage and road surface.

i like the flat protection in the tires. i used to run liners but think the protective plies in some of the modern tires are pretty good.

Tire liners + thorn resistant tubes here. ' been very lucky with this combo so far.
BTW, I'm using a low pressure MTB slick tires (Panaracer).

The results of this poll is interesting.

What's might a neat followup poll- for those that use tire-liners/armored tires- how long do your tubes go before the glue fails around the valve stem?

I've been able to go ~1 year tops on a set of tubes (riding 5 days a week, any weather but ice/slush). My recent flats happened when the valve stem literally pulled away from the rest of the tube. I'm now on an annual 'replace the tubes in spring' plan, flat or not.

I used to use Mr. Tuffy tire liners with the stock tires on my bike. Since I switched to Schwalbe Marathon Supremes, which are narrower (under the tire liners' size range) and stronger, I haven't been using tire liners. I ride on fairly good suburban roads most of the time anyways.

I used them once, and that was enough. I either use Kevlar tires and/or thick inner tubes.

I just started using the liners with the kevlar tires about 4 months ago so I can't say. Why would they affect the glue on the valve stem? Cheap tubes?