I didn't vote in the poll, because it doesn't include my option: pistol, backup pistol or revolver, spare mags/ammo, couple of knives and a SureFire E2E light. I only carry pepper spray when I'm somewhere I'm prohibited from carrying my gun(s). Carrying "less lethal" items like ASP batons, blackjacks, etc. is prohibited here, and our permits are CHLs, not CWLs.
I carried pepper spray in addition to my guns for about 14 years, then I got thinking about it and discussing it with some of my friends and other experts over on a private forum, and quit carrying it, since I'm not a peace officer, and would only feasibly be using pepper spray to enable me to get away, not to subdue anyone and place him in custody.
Here are some thoughts, to use as you see fit, or to ignore:
You've had to shoot someone, and are asked (by police or grand jury/prosecutor), "Could you have avoided having to shoot X by spraying him with your OC?" Now that Texas is a "no duty to retreat" state, what you've done by carrying OC is put yourself back in the position of having a possible alternative you'd be better off without.
Have you checked on the effects OC has on you? Around here, it is windy more often than not. If I had to spray someone when outdoors, odds are I'd wind up getting some OC on me or up my nose or both. I've sprayed myself to see what it does, and have discovered that I am EXTREMELY sensitive to it. If I had to spray someone, and he happened to be one of the few folks who are unfazed by OC, I received splashback and needed to shoot, I'd be up a creek, with my eyes shut tight, my throat closed up, slinging snot and coughing my head off. When I carried OC, I was perpetually worried about such an event. Besides, if I'm close enough to someone to spray him with OC, I've let him get too close, and his taking it from me is a legitimate concern. Then I most likely would have to shoot him, since he now has the ability to blind and disarm me.
The function of pepper spray for a non-LEO is to allow him to get away from the threat. I'm 56 years old, have an operated neck, a bad lower back and hip, am arthritic and can't run very fast anymore. If I have to run, I need a head start, and that doesn't dovetail well with getting close enough to a threat to hit it with pepper spray.
There are other considerations, but one I consider quite important is that, particularly under Texas law, the line between an encounter that would justify my use of OC and one justifying deadly force is quite fine, and it is pretty hard for me to come up with a scenario where OC use would be fine, but shooting wouldn't, so I think I'm better off without pepper spray in my pocket than with it, as long as I can carry a gun. Others disagree, and make good arguments for carrying OC. As I said, I did for about 14 years.