If an anti is scared or bothered by the sight of carrying in a thigh rig, no worries, they are generally scared of and/or bothered by nearly everything gun related that comes to their notice. You certainly haven't presented anything scarier or more bothersome than any other holster, which would scare or bother them if they happened to notice.
Now other gun owners, that's a different story. Two groups will be fine with you wearing a thigh rig:
1. Those who truly don't care how or what another chooses to carry, even if it's not their own personal preference. They're simply glad to see another armed citizen exercising their RKBA.
2. Those who really want to appear tacti-cool. They really do seem to relish the notion that others will consider them operators. They are most likely to give you a wink, a nod, then a low thumbs up of approval ...and then perhaps another nod and/or wink to ensure you didn't miss it. :lol:
A third group of gun owners will have a problem with your thigh rig. Whether they mention it or not, it will bother them. Here's the reason:
3. They have a deeply rooted desire to be tacti-cool which they are ashamed of. Their natural defensive mechanism when confronted with tacti-cool is to project disdain in an attempt to escape their hidden, even denied jealousy of someone so bold as to not care what others think.
They are quite comfortable in their disdain for gun owner #2 above, but you... you represent a flaw in their very being and
that is unsettling.
Hopefully humorous, but based on a
wee bit of truth I suspect.
Carry as you deem advantageous for you. Your comfort and confidence in doing so are of far more benefit to "the cause" than your gear IMO.