Understand 1838 jobs/projects (segmentations/billing) vs. complex jobs over $50K.
Most integrators in CA that reap the benefits are capable to provide all low voltage design and engineering for items such as nurse call, access control, cctv, ip video, Intercom, FA alarm, Security Data infrastructure for all divisions mentioned. Provisioning of all systems to OSHPD including structural conformance and local IOR/AOR compliances.
Trunkslammers diving into an OSHPD job can easily get slammed, financially.
I used masonry screws in stucco here in Los Angeles area. A hammer drill reduces the time to drill a hole in stucco, brick, masonry, etc. About 30 seconds to drill a hole using masonry bits vs. about 3-5 minutes using a regular drill with masonry bits. I also put a dab of caulking and/or waterproof gel into the hole before mounting, just to prevent any moisture going into the hole during a rainy winter's freeze/thaw cycles.
Drop-in anchors are the way to go. You save labor as your hole is typically about an inch deep. The screws are threaded so less of a chance of stripping the screw. They also hold a tremendous amount of weight, even when being pulled straight down from a ceiling.
We prefer to use double expansion anchors for heavy applications in solid masonry applications. For lighter products, we simply use Toggler Alligator drop in plastic anchors. We choose not to use the Tapcon product because of many past failures. The most common cause of failure is over-tightening, as mentioned. Another cause is if your hole isn't perfect, the Tapcon screw will sometimes break, leaving a portion of its screw inside the hole, blocking it's use again. Also, we have found that Tapcons are not as reusable as they are claimed to be. Once removed, the hole is enlarged to a degree, which will reduce the holding power for the second application. These issues are negated by the use of double expansion anchors, which can be used many times, over and over.