Not really. Out of a dozen people I know that carry the only ones who use safeties on handguns are the ones who carry guns that are legit single action. (1911, BHP, HK USP in SA mode, CZ variants in SA mode, etc. ) The rest all carry either decocked and safety off or they carry guns that don't have safeties. People who actually carry with a "unnecessary safety lever fetish" IMHO are the minority. Even the people I knew that were ruminating about "liking the safety" as a feature on a gun, if they were serious about carrying a gun (eg, they were intent on integrating into their daily life or at least, carrying on a regular basis) about a month or two after they thought about it enough, realized how retarded they were, and then promptly stopped caring about it.
The safety on the shield is like buying a bicycle with training wheels on it.... actually its worse. Training wheels probably won't get you killed or potentially induce unsafe gun handling.
-Mike